10 Company A acquires 80% of the equity of Company B, and the non-controlling interest is measured by the proportionate share of identifiable net assets. This combination generates goodwill of $220,000. On the acquisition date, the total identifiable net assets of Company B were underestimated by $200,000, the carrying amount of total assets was $700,000, and the carrying amount of total liabilities was $200,000. What was the amount of transfer consideration for Company A?