Home / 396,397.76-547,026.18-215,105.12

Finding the Fourth Proportional to 396,397.76, 547,026.18 and 215,105.12

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Solution

The fourth proportional to 396,397.76, 547,026.18 and 215,105.12 is: 296,843.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,397.76 : 547,026.18 = 215,105.12 : x
  2. Step 2: Convert to fraction form
    396,397.76/547,026.18 = 215,105.12/x
  3. Step 3: Cross multiply
    396,397.76x = 547,026.18 × 215,105.12
  4. Step 4: Simplify right side
    396,397.76x = 117,668,132,092.04
  5. Step 5: Solve for x
    x = 117,668,132,092.04/396,397.76
  6. Step 6: Final answer
    x = 296,843.58

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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.