Home / 266,431,179.30-399,079,898.55-221,081,547.30

Finding the Fourth Proportional to 266,431,179.30, 399,079,898.55 and 221,081,547.30

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Solution

The fourth proportional to 266,431,179.30, 399,079,898.55 and 221,081,547.30 is: 331,151,938.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,431,179.30 : 399,079,898.55 = 221,081,547.30 : x
  2. Step 2: Convert to fraction form
    266,431,179.30/399,079,898.55 = 221,081,547.30/x
  3. Step 3: Cross multiply
    266,431,179.30x = 399,079,898.55 × 221,081,547.30
  4. Step 4: Simplify right side
    266,431,179.30x = 88,229,201,467,761,040
  5. Step 5: Solve for x
    x = 88,229,201,467,761,040/266,431,179.30
  6. Step 6: Final answer
    x = 331,151,938.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.