Home / 396,422.28-547,063.12-215,134.24

Finding the Fourth Proportional to 396,422.28, 547,063.12 and 215,134.24

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Solution

The fourth proportional to 396,422.28, 547,063.12 and 215,134.24 is: 296,885.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,422.28 : 547,063.12 = 215,134.24 : x
  2. Step 2: Convert to fraction form
    396,422.28/547,063.12 = 215,134.24/x
  3. Step 3: Cross multiply
    396,422.28x = 547,063.12 × 215,134.24
  4. Step 4: Simplify right side
    396,422.28x = 117,692,008,553.23
  5. Step 5: Solve for x
    x = 117,692,008,553.23/396,422.28
  6. Step 6: Final answer
    x = 296,885.45

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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.