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Finding the Fourth Proportional to 396,675, 547,276.31 and 253,517.63

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Solution

The fourth proportional to 396,675, 547,276.31 and 253,517.63 is: 349,767.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,675 : 547,276.31 = 253,517.63 : x
  2. Step 2: Convert to fraction form
    396,675/547,276.31 = 253,517.63/x
  3. Step 3: Cross multiply
    396,675x = 547,276.31 × 253,517.63
  4. Step 4: Simplify right side
    396,675x = 138,744,189,062.38
  5. Step 5: Solve for x
    x = 138,744,189,062.38/396,675
  6. Step 6: Final answer
    x = 349,767.92

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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.