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Finding the Fourth Proportional to 381,331.20, 571,996.80 and 97,021.20

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Solution

The fourth proportional to 381,331.20, 571,996.80 and 97,021.20 is: 145,531.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,331.20 : 571,996.80 = 97,021.20 : x
  2. Step 2: Convert to fraction form
    381,331.20/571,996.80 = 97,021.20/x
  3. Step 3: Cross multiply
    381,331.20x = 571,996.80 × 97,021.20
  4. Step 4: Simplify right side
    381,331.20x = 55,495,815,932.16
  5. Step 5: Solve for x
    x = 55,495,815,932.16/381,331.20
  6. Step 6: Final answer
    x = 145,531.80

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.