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Finding the Fourth Proportional to 468,171.97, 645,872.27 and 274,481.69

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Solution

The fourth proportional to 468,171.97, 645,872.27 and 274,481.69 is: 378,664.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,171.97 : 645,872.27 = 274,481.69 : x
  2. Step 2: Convert to fraction form
    468,171.97/645,872.27 = 274,481.69/x
  3. Step 3: Cross multiply
    468,171.97x = 645,872.27 × 274,481.69
  4. Step 4: Simplify right side
    468,171.97x = 177,280,107,591.97
  5. Step 5: Solve for x
    x = 177,280,107,591.97/468,171.97
  6. Step 6: Final answer
    x = 378,664.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.