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Finding the Fourth Proportional to 468,091.38, 645,984.43 and 274,472.18

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Solution

The fourth proportional to 468,091.38, 645,984.43 and 274,472.18 is: 378,782.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,091.38 : 645,984.43 = 274,472.18 : x
  2. Step 2: Convert to fraction form
    468,091.38/645,984.43 = 274,472.18/x
  3. Step 3: Cross multiply
    468,091.38x = 645,984.43 × 274,472.18
  4. Step 4: Simplify right side
    468,091.38x = 177,304,754,748.16
  5. Step 5: Solve for x
    x = 177,304,754,748.16/468,091.38
  6. Step 6: Final answer
    x = 378,782.35

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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.