Home / 396,515.80-547,177.17-215,223.90

Finding the Fourth Proportional to 396,515.80, 547,177.17 and 215,223.90

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Solution

The fourth proportional to 396,515.80, 547,177.17 and 215,223.90 is: 297,001.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,515.80 : 547,177.17 = 215,223.90 : x
  2. Step 2: Convert to fraction form
    396,515.80/547,177.17 = 215,223.90/x
  3. Step 3: Cross multiply
    396,515.80x = 547,177.17 × 215,223.90
  4. Step 4: Simplify right side
    396,515.80x = 117,765,604,518.36
  5. Step 5: Solve for x
    x = 117,765,604,518.36/396,515.80
  6. Step 6: Final answer
    x = 297,001.04

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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.