Home / 396,618.78-547,334.10-215,330.52

Finding the Fourth Proportional to 396,618.78, 547,334.10 and 215,330.52

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Solution

The fourth proportional to 396,618.78, 547,334.10 and 215,330.52 is: 297,156.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,618.78 : 547,334.10 = 215,330.52 : x
  2. Step 2: Convert to fraction form
    396,618.78/547,334.10 = 215,330.52/x
  3. Step 3: Cross multiply
    396,618.78x = 547,334.10 × 215,330.52
  4. Step 4: Simplify right side
    396,618.78x = 117,857,736,366.73
  5. Step 5: Solve for x
    x = 117,857,736,366.73/396,618.78
  6. Step 6: Final answer
    x = 297,156.22

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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.