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Finding the Fourth Proportional to 396,672.68, 547,505.52 and 243,747.92

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Solution

The fourth proportional to 396,672.68, 547,505.52 and 243,747.92 is: 336,431.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,672.68 : 547,505.52 = 243,747.92 : x
  2. Step 2: Convert to fraction form
    396,672.68/547,505.52 = 243,747.92/x
  3. Step 3: Cross multiply
    396,672.68x = 547,505.52 × 243,747.92
  4. Step 4: Simplify right side
    396,672.68x = 133,453,331,688.52
  5. Step 5: Solve for x
    x = 133,453,331,688.52/396,672.68
  6. Step 6: Final answer
    x = 336,431.87

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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.