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Finding the Fourth Proportional to 298,102.56, 447,105.24 and 87,691.29

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Solution

The fourth proportional to 298,102.56, 447,105.24 and 87,691.29 is: 131,522.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,102.56 : 447,105.24 = 87,691.29 : x
  2. Step 2: Convert to fraction form
    298,102.56/447,105.24 = 87,691.29/x
  3. Step 3: Cross multiply
    298,102.56x = 447,105.24 × 87,691.29
  4. Step 4: Simplify right side
    298,102.56x = 39,207,235,261.36
  5. Step 5: Solve for x
    x = 39,207,235,261.36/298,102.56
  6. Step 6: Final answer
    x = 131,522.64

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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.