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Finding the Fourth Proportional to 266,098.28, 399,211.20 and 88,606.90

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Solution

The fourth proportional to 266,098.28, 399,211.20 and 88,606.90 is: 132,931.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,098.28 : 399,211.20 = 88,606.90 : x
  2. Step 2: Convert to fraction form
    266,098.28/399,211.20 = 88,606.90/x
  3. Step 3: Cross multiply
    266,098.28x = 399,211.20 × 88,606.90
  4. Step 4: Simplify right side
    266,098.28x = 35,372,866,877.28
  5. Step 5: Solve for x
    x = 35,372,866,877.28/266,098.28
  6. Step 6: Final answer
    x = 132,931.59

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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.