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Finding the Fourth Proportional to 215,627.76, 323,504 and 89,244.64

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Solution

The fourth proportional to 215,627.76, 323,504 and 89,244.64 is: 133,892.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,627.76 : 323,504 = 89,244.64 : x
  2. Step 2: Convert to fraction form
    215,627.76/323,504 = 89,244.64/x
  3. Step 3: Cross multiply
    215,627.76x = 323,504 × 89,244.64
  4. Step 4: Simplify right side
    215,627.76x = 28,870,998,018.56
  5. Step 5: Solve for x
    x = 28,870,998,018.56/215,627.76
  6. Step 6: Final answer
    x = 133,892.77

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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.