A company has total assets of $2,000,000 and total liabilities of $1,500,000. During the current year, the company earned $400,000 in net income and paid $200,000 in dividends to its shareholders. The company's stock is currently trading at $50 per share, and the company has 50,000 shares outstanding.

Calculate the following financial ratios for the company:

1. Return on assets (ROA)
2. Return on equity (ROE)
3. Price-to-earnings (P/E) ratio
4. Price-to-book (P/B) ratio

Also, explain what these financial ratios indicate about the company's financial performance.