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Finding the Fourth Proportional to 437,398.80, 656,124.12 and 137,888.88

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Solution

The fourth proportional to 437,398.80, 656,124.12 and 137,888.88 is: 206,841.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,398.80 : 656,124.12 = 137,888.88 : x
  2. Step 2: Convert to fraction form
    437,398.80/656,124.12 = 137,888.88/x
  3. Step 3: Cross multiply
    437,398.80x = 656,124.12 × 137,888.88
  4. Step 4: Simplify right side
    437,398.80x = 90,472,220,047.79
  5. Step 5: Solve for x
    x = 90,472,220,047.79/437,398.80
  6. Step 6: Final answer
    x = 206,841.49

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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.