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Finding the Fourth Proportional to 437,613.96, 656,420.94 and 138,117.84

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Solution

The fourth proportional to 437,613.96, 656,420.94 and 138,117.84 is: 207,176.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,613.96 : 656,420.94 = 138,117.84 : x
  2. Step 2: Convert to fraction form
    437,613.96/656,420.94 = 138,117.84/x
  3. Step 3: Cross multiply
    437,613.96x = 656,420.94 × 138,117.84
  4. Step 4: Simplify right side
    437,613.96x = 90,663,442,363.57
  5. Step 5: Solve for x
    x = 90,663,442,363.57/437,613.96
  6. Step 6: Final answer
    x = 207,176.76

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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.