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Finding the Fourth Proportional to 437,940.41, 656,854.11 and 138,451.41

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Solution

The fourth proportional to 437,940.41, 656,854.11 and 138,451.41 is: 207,659.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,940.41 : 656,854.11 = 138,451.41 : x
  2. Step 2: Convert to fraction form
    437,940.41/656,854.11 = 138,451.41/x
  3. Step 3: Cross multiply
    437,940.41x = 656,854.11 × 138,451.41
  4. Step 4: Simplify right side
    437,940.41x = 90,942,377,693.80
  5. Step 5: Solve for x
    x = 90,942,377,693.80/437,940.41
  6. Step 6: Final answer
    x = 207,659.25

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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.