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Finding the Fourth Proportional to 230,385.28, 345,733.62 and 80,626.87

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Solution

The fourth proportional to 230,385.28, 345,733.62 and 80,626.87 is: 120,994.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,385.28 : 345,733.62 = 80,626.87 : x
  2. Step 2: Convert to fraction form
    230,385.28/345,733.62 = 80,626.87/x
  3. Step 3: Cross multiply
    230,385.28x = 345,733.62 × 80,626.87
  4. Step 4: Simplify right side
    230,385.28x = 27,875,419,634.37
  5. Step 5: Solve for x
    x = 27,875,419,634.37/230,385.28
  6. Step 6: Final answer
    x = 120,994.79

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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.