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Finding the Fourth Proportional to 437,632.96, 656,449.44 and 138,136.90

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Solution

The fourth proportional to 437,632.96, 656,449.44 and 138,136.90 is: 207,205.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,632.96 : 656,449.44 = 138,136.90 : x
  2. Step 2: Convert to fraction form
    437,632.96/656,449.44 = 138,136.90/x
  3. Step 3: Cross multiply
    437,632.96x = 656,449.44 × 138,136.90
  4. Step 4: Simplify right side
    437,632.96x = 90,679,890,648.34
  5. Step 5: Solve for x
    x = 90,679,890,648.34/437,632.96
  6. Step 6: Final answer
    x = 207,205.35

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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.