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Finding the Fourth Proportional to 266,437.10, 399,619.17 and 88,940.06

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Solution

The fourth proportional to 266,437.10, 399,619.17 and 88,940.06 is: 133,397.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,437.10 : 399,619.17 = 88,940.06 : x
  2. Step 2: Convert to fraction form
    266,437.10/399,619.17 = 88,940.06/x
  3. Step 3: Cross multiply
    266,437.10x = 399,619.17 × 88,940.06
  4. Step 4: Simplify right side
    266,437.10x = 35,542,152,956.95
  5. Step 5: Solve for x
    x = 35,542,152,956.95/266,437.10
  6. Step 6: Final answer
    x = 133,397.91

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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.