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Finding the Fourth Proportional to 150,489.34, 225,755.88 and 80,330.38

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Solution

The fourth proportional to 150,489.34, 225,755.88 and 80,330.38 is: 120,507.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,489.34 : 225,755.88 = 80,330.38 : x
  2. Step 2: Convert to fraction form
    150,489.34/225,755.88 = 80,330.38/x
  3. Step 3: Cross multiply
    150,489.34x = 225,755.88 × 80,330.38
  4. Step 4: Simplify right side
    150,489.34x = 18,135,055,627.63
  5. Step 5: Solve for x
    x = 18,135,055,627.63/150,489.34
  6. Step 6: Final answer
    x = 120,507.24

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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.