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Finding the Fourth Proportional to 266,101.23, 399,215.40 and 88,609.78

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Solution

The fourth proportional to 266,101.23, 399,215.40 and 88,609.78 is: 132,935.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,101.23 : 399,215.40 = 88,609.78 : x
  2. Step 2: Convert to fraction form
    266,101.23/399,215.40 = 88,609.78/x
  3. Step 3: Cross multiply
    266,101.23x = 399,215.40 × 88,609.78
  4. Step 4: Simplify right side
    266,101.23x = 35,374,388,766.61
  5. Step 5: Solve for x
    x = 35,374,388,766.61/266,101.23
  6. Step 6: Final answer
    x = 132,935.83

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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.