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Finding the Fourth Proportional to 230,384.28, 345,732.12 and 80,625.87

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Solution

The fourth proportional to 230,384.28, 345,732.12 and 80,625.87 is: 120,993.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,384.28 : 345,732.12 = 80,625.87 : x
  2. Step 2: Convert to fraction form
    230,384.28/345,732.12 = 80,625.87/x
  3. Step 3: Cross multiply
    230,384.28x = 345,732.12 × 80,625.87
  4. Step 4: Simplify right side
    230,384.28x = 27,874,952,961.94
  5. Step 5: Solve for x
    x = 27,874,952,961.94/230,384.28
  6. Step 6: Final answer
    x = 120,993.29

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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.