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Finding the Fourth Proportional to 308,542.62, 425,828.25 and 172,584.12

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Solution

The fourth proportional to 308,542.62, 425,828.25 and 172,584.12 is: 238,188.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,542.62 : 425,828.25 = 172,584.12 : x
  2. Step 2: Convert to fraction form
    308,542.62/425,828.25 = 172,584.12/x
  3. Step 3: Cross multiply
    308,542.62x = 425,828.25 × 172,584.12
  4. Step 4: Simplify right side
    308,542.62x = 73,491,193,797.39
  5. Step 5: Solve for x
    x = 73,491,193,797.39/308,542.62
  6. Step 6: Final answer
    x = 238,188.14

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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.