Home / 396,500.45-547,155.96-215,208.53

Finding the Fourth Proportional to 396,500.45, 547,155.96 and 215,208.53

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Solution

The fourth proportional to 396,500.45, 547,155.96 and 215,208.53 is: 296,979.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,500.45 : 547,155.96 = 215,208.53 : x
  2. Step 2: Convert to fraction form
    396,500.45/547,155.96 = 215,208.53/x
  3. Step 3: Cross multiply
    396,500.45x = 547,155.96 × 215,208.53
  4. Step 4: Simplify right side
    396,500.45x = 117,752,626,020.52
  5. Step 5: Solve for x
    x = 117,752,626,020.52/396,500.45
  6. Step 6: Final answer
    x = 296,979.80

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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.