Home / 396,419.31-547,062.65-215,132.80

Finding the Fourth Proportional to 396,419.31, 547,062.65 and 215,132.80

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Solution

The fourth proportional to 396,419.31, 547,062.65 and 215,132.80 is: 296,885.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,419.31 : 547,062.65 = 215,132.80 : x
  2. Step 2: Convert to fraction form
    396,419.31/547,062.65 = 215,132.80/x
  3. Step 3: Cross multiply
    396,419.31x = 547,062.65 × 215,132.80
  4. Step 4: Simplify right side
    396,419.31x = 117,691,120,207.75
  5. Step 5: Solve for x
    x = 117,691,120,207.75/396,419.31
  6. Step 6: Final answer
    x = 296,885.44

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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.