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Finding the Fourth Proportional to 308,229.81, 425,354.50 and 172,269.48

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Solution

The fourth proportional to 308,229.81, 425,354.50 and 172,269.48 is: 237,730.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,229.81 : 425,354.50 = 172,269.48 : x
  2. Step 2: Convert to fraction form
    308,229.81/425,354.50 = 172,269.48/x
  3. Step 3: Cross multiply
    308,229.81x = 425,354.50 × 172,269.48
  4. Step 4: Simplify right side
    308,229.81x = 73,275,598,530.66
  5. Step 5: Solve for x
    x = 73,275,598,530.66/308,229.81
  6. Step 6: Final answer
    x = 237,730.41

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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.