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Finding the Fourth Proportional to 266,561.27, 399,862.56 and 89,068.90

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Solution

The fourth proportional to 266,561.27, 399,862.56 and 89,068.90 is: 133,610.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,561.27 : 399,862.56 = 89,068.90 : x
  2. Step 2: Convert to fraction form
    266,561.27/399,862.56 = 89,068.90/x
  3. Step 3: Cross multiply
    266,561.27x = 399,862.56 × 89,068.90
  4. Step 4: Simplify right side
    266,561.27x = 35,615,318,370.38
  5. Step 5: Solve for x
    x = 35,615,318,370.38/266,561.27
  6. Step 6: Final answer
    x = 133,610.25

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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.