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Finding the Fourth Proportional to 266,436.60, 399,618.42 and 88,939.56

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Solution

The fourth proportional to 266,436.60, 399,618.42 and 88,939.56 is: 133,397.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,436.60 : 399,618.42 = 88,939.56 : x
  2. Step 2: Convert to fraction form
    266,436.60/399,618.42 = 88,939.56/x
  3. Step 3: Cross multiply
    266,436.60x = 399,618.42 × 88,939.56
  4. Step 4: Simplify right side
    266,436.60x = 35,541,886,442.70
  5. Step 5: Solve for x
    x = 35,541,886,442.70/266,436.60
  6. Step 6: Final answer
    x = 133,397.16

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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.