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Finding the Fourth Proportional to 266,105.40, 399,221.90 and 88,614.02

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Solution

The fourth proportional to 266,105.40, 399,221.90 and 88,614.02 is: 132,942.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,105.40 : 399,221.90 = 88,614.02 : x
  2. Step 2: Convert to fraction form
    266,105.40/399,221.90 = 88,614.02/x
  3. Step 3: Cross multiply
    266,105.40x = 399,221.90 × 88,614.02
  4. Step 4: Simplify right side
    266,105.40x = 35,376,654,991.86
  5. Step 5: Solve for x
    x = 35,376,654,991.86/266,105.40
  6. Step 6: Final answer
    x = 132,942.27

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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.