Home / 266,121,456.10-399,480,782.55-205,804,579.30

Finding the Fourth Proportional to 266,121,456.10, 399,480,782.55 and 205,804,579.30

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Solution

The fourth proportional to 266,121,456.10, 399,480,782.55 and 205,804,579.30 is: 308,937,789.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,121,456.10 : 399,480,782.55 = 205,804,579.30 : x
  2. Step 2: Convert to fraction form
    266,121,456.10/399,480,782.55 = 205,804,579.30/x
  3. Step 3: Cross multiply
    266,121,456.10x = 399,480,782.55 × 205,804,579.30
  4. Step 4: Simplify right side
    266,121,456.10x = 82,214,974,391,137,536
  5. Step 5: Solve for x
    x = 82,214,974,391,137,536/266,121,456.10
  6. Step 6: Final answer
    x = 308,937,789.52

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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.