Home / 396,436.28-547,086.02-215,149.77

Finding the Fourth Proportional to 396,436.28, 547,086.02 and 215,149.77

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Solution

The fourth proportional to 396,436.28, 547,086.02 and 215,149.77 is: 296,908.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,436.28 : 547,086.02 = 215,149.77 : x
  2. Step 2: Convert to fraction form
    396,436.28/547,086.02 = 215,149.77/x
  3. Step 3: Cross multiply
    396,436.28x = 547,086.02 × 215,149.77
  4. Step 4: Simplify right side
    396,436.28x = 117,705,430,297.47
  5. Step 5: Solve for x
    x = 117,705,430,297.47/396,436.28
  6. Step 6: Final answer
    x = 296,908.83

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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.