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Finding the Fourth Proportional to 396,380.98, 547,002.97 and 215,088.29

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Solution

The fourth proportional to 396,380.98, 547,002.97 and 215,088.29 is: 296,820.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,380.98 : 547,002.97 = 215,088.29 : x
  2. Step 2: Convert to fraction form
    396,380.98/547,002.97 = 215,088.29/x
  3. Step 3: Cross multiply
    396,380.98x = 547,002.97 × 215,088.29
  4. Step 4: Simplify right side
    396,380.98x = 117,653,933,442.22
  5. Step 5: Solve for x
    x = 117,653,933,442.22/396,380.98
  6. Step 6: Final answer
    x = 296,820.33

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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.