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Finding the Fourth Proportional to 308,543.62, 425,829.63 and 172,585.12

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Solution

The fourth proportional to 308,543.62, 425,829.63 and 172,585.12 is: 238,189.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,543.62 : 425,829.63 = 172,585.12 : x
  2. Step 2: Convert to fraction form
    308,543.62/425,829.63 = 172,585.12/x
  3. Step 3: Cross multiply
    308,543.62x = 425,829.63 × 172,585.12
  4. Step 4: Simplify right side
    308,543.62x = 73,491,857,793.11
  5. Step 5: Solve for x
    x = 73,491,857,793.11/308,543.62
  6. Step 6: Final answer
    x = 238,189.52

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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.