DUBAI, July 28 (Reuters) - Aldar Properties, the builder of Abu Dhabi's Formula One motor racing circuit, reported a 54% rise in second-quarter profit on Thursday, helped by record sales on strong local and international demand.

Profit attributable to shareholders came in at 803.99 million dirhams ($218.91 million) for the three months to June 30, compared with 520.83 million dirhams a year earlier.

Group sales in the quarter rose 33% to 3.12 billion dirhams.

The Abu Dhabi developer also said it signed an agreement with Abu Dhabi state fund Mubadala Investment Company to acquire four commercial towers that are part of Abu Dhabi Global Market, the emirate's international financial centre.

The Al Sila, Al Sarab, Al Maqam and Al Khatem towers, which have a total net leasable area of 180,0000 square metres, are valued at 4.3 billion dirhams, it said. ($1 = 3.6727 UAE dirham) (Reporting by Hadeel Al Sayegh Editing by David Goodman )