Home / 396,500.40-547,180.38-215,219.88

Finding the Fourth Proportional to 396,500.40, 547,180.38 and 215,219.88

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Solution

The fourth proportional to 396,500.40, 547,180.38 and 215,219.88 is: 297,008.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,500.40 : 547,180.38 = 215,219.88 : x
  2. Step 2: Convert to fraction form
    396,500.40/547,180.38 = 215,219.88/x
  3. Step 3: Cross multiply
    396,500.40x = 547,180.38 × 215,219.88
  4. Step 4: Simplify right side
    396,500.40x = 117,764,095,721.95
  5. Step 5: Solve for x
    x = 117,764,095,721.95/396,500.40
  6. Step 6: Final answer
    x = 297,008.77

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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.