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Finding the Fourth Proportional to 215,542.72, 323,187.18 and 82,432.72

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Solution

The fourth proportional to 215,542.72, 323,187.18 and 82,432.72 is: 123,600.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,542.72 : 323,187.18 = 82,432.72 : x
  2. Step 2: Convert to fraction form
    215,542.72/323,187.18 = 82,432.72/x
  3. Step 3: Cross multiply
    215,542.72x = 323,187.18 × 82,432.72
  4. Step 4: Simplify right side
    215,542.72x = 26,641,198,316.53
  5. Step 5: Solve for x
    x = 26,641,198,316.53/215,542.72
  6. Step 6: Final answer
    x = 123,600.55

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1.5x scale

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.