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Finding the Fourth Proportional to 381,663.60, 572,757.75 and 132,345.60

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Solution

The fourth proportional to 381,663.60, 572,757.75 and 132,345.60 is: 198,609.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,663.60 : 572,757.75 = 132,345.60 : x
  2. Step 2: Convert to fraction form
    381,663.60/572,757.75 = 132,345.60/x
  3. Step 3: Cross multiply
    381,663.60x = 572,757.75 × 132,345.60
  4. Step 4: Simplify right side
    381,663.60x = 75,801,968,078.40
  5. Step 5: Solve for x
    x = 75,801,968,078.40/381,663.60
  6. Step 6: Final answer
    x = 198,609.37

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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.