Home / 396,978.36-547,832.38-215,691.75

Finding the Fourth Proportional to 396,978.36, 547,832.38 and 215,691.75

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Solution

The fourth proportional to 396,978.36, 547,832.38 and 215,691.75 is: 297,655.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,978.36 : 547,832.38 = 215,691.75 : x
  2. Step 2: Convert to fraction form
    396,978.36/547,832.38 = 215,691.75/x
  3. Step 3: Cross multiply
    396,978.36x = 547,832.38 × 215,691.75
  4. Step 4: Simplify right side
    396,978.36x = 118,162,924,748.87
  5. Step 5: Solve for x
    x = 118,162,924,748.87/396,978.36
  6. Step 6: Final answer
    x = 297,655.83

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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.