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Finding the Fourth Proportional to 396,543.66, 547,230.51 and 215,255.52

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Solution

The fourth proportional to 396,543.66, 547,230.51 and 215,255.52 is: 297,052.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,543.66 : 547,230.51 = 215,255.52 : x
  2. Step 2: Convert to fraction form
    396,543.66/547,230.51 = 215,255.52/x
  3. Step 3: Cross multiply
    396,543.66x = 547,230.51 × 215,255.52
  4. Step 4: Simplify right side
    396,543.66x = 117,794,387,989.92
  5. Step 5: Solve for x
    x = 117,794,387,989.92/396,543.66
  6. Step 6: Final answer
    x = 297,052.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.