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Finding the Fourth Proportional to 266,212.71, 399,184.20 and 88,657.47

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Solution

The fourth proportional to 266,212.71, 399,184.20 and 88,657.47 is: 132,941.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,212.71 : 399,184.20 = 88,657.47 : x
  2. Step 2: Convert to fraction form
    266,212.71/399,184.20 = 88,657.47/x
  3. Step 3: Cross multiply
    266,212.71x = 399,184.20 × 88,657.47
  4. Step 4: Simplify right side
    266,212.71x = 35,390,661,235.97
  5. Step 5: Solve for x
    x = 35,390,661,235.97/266,212.71
  6. Step 6: Final answer
    x = 132,941.29

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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.