Home / 396,380.29-547,002.02-215,087.61

Finding the Fourth Proportional to 396,380.29, 547,002.02 and 215,087.61

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Solution

The fourth proportional to 396,380.29, 547,002.02 and 215,087.61 is: 296,819.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,380.29 : 547,002.02 = 215,087.61 : x
  2. Step 2: Convert to fraction form
    396,380.29/547,002.02 = 215,087.61/x
  3. Step 3: Cross multiply
    396,380.29x = 547,002.02 × 215,087.61
  4. Step 4: Simplify right side
    396,380.29x = 117,653,355,633.43
  5. Step 5: Solve for x
    x = 117,653,355,633.43/396,380.29
  6. Step 6: Final answer
    x = 296,819.39

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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.