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Finding the Fourth Proportional to 288,115.60, 432,238.20 and 88,445.20

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Solution

The fourth proportional to 288,115.60, 432,238.20 and 88,445.20 is: 132,687.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,115.60 : 432,238.20 = 88,445.20 : x
  2. Step 2: Convert to fraction form
    288,115.60/432,238.20 = 88,445.20/x
  3. Step 3: Cross multiply
    288,115.60x = 432,238.20 × 88,445.20
  4. Step 4: Simplify right side
    288,115.60x = 38,229,394,046.64
  5. Step 5: Solve for x
    x = 38,229,394,046.64/288,115.60
  6. Step 6: Final answer
    x = 132,687.69

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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.