Home / 396,499.73-547,154.96-215,207.81

Finding the Fourth Proportional to 396,499.73, 547,154.96 and 215,207.81

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Solution

The fourth proportional to 396,499.73, 547,154.96 and 215,207.81 is: 296,978.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,499.73 : 547,154.96 = 215,207.81 : x
  2. Step 2: Convert to fraction form
    396,499.73/547,154.96 = 215,207.81/x
  3. Step 3: Cross multiply
    396,499.73x = 547,154.96 × 215,207.81
  4. Step 4: Simplify right side
    396,499.73x = 117,752,018,474.48
  5. Step 5: Solve for x
    x = 117,752,018,474.48/396,499.73
  6. Step 6: Final answer
    x = 296,978.81

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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.