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Finding the Fourth Proportional to 396,663.48, 547,192.87 and 253,272.83

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Solution

The fourth proportional to 396,663.48, 547,192.87 and 253,272.83 is: 349,387.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,663.48 : 547,192.87 = 253,272.83 : x
  2. Step 2: Convert to fraction form
    396,663.48/547,192.87 = 253,272.83/x
  3. Step 3: Cross multiply
    396,663.48x = 547,192.87 × 253,272.83
  4. Step 4: Simplify right side
    396,663.48x = 138,589,083,371.58
  5. Step 5: Solve for x
    x = 138,589,083,371.58/396,663.48
  6. Step 6: Final answer
    x = 349,387.05

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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.