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Finding the Fourth Proportional to 396,440.70, 547,092.18 and 215,154.24

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Solution

The fourth proportional to 396,440.70, 547,092.18 and 215,154.24 is: 296,915.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,440.70 : 547,092.18 = 215,154.24 : x
  2. Step 2: Convert to fraction form
    396,440.70/547,092.18 = 215,154.24/x
  3. Step 3: Cross multiply
    396,440.70x = 547,092.18 × 215,154.24
  4. Step 4: Simplify right side
    396,440.70x = 117,709,202,197.84
  5. Step 5: Solve for x
    x = 117,709,202,197.84/396,440.70
  6. Step 6: Final answer
    x = 296,915.03

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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.