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Finding the Fourth Proportional to 275,517.12, 412,881.36 and 156,943.56

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Solution

The fourth proportional to 275,517.12, 412,881.36 and 156,943.56 is: 235,190.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,517.12 : 412,881.36 = 156,943.56 : x
  2. Step 2: Convert to fraction form
    275,517.12/412,881.36 = 156,943.56/x
  3. Step 3: Cross multiply
    275,517.12x = 412,881.36 × 156,943.56
  4. Step 4: Simplify right side
    275,517.12x = 64,799,070,496.04
  5. Step 5: Solve for x
    x = 64,799,070,496.04/275,517.12
  6. Step 6: Final answer
    x = 235,190.72

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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.