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Finding the Fourth Proportional to 308,081.14, 425,109.90 and 172,098.27

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Solution

The fourth proportional to 308,081.14, 425,109.90 and 172,098.27 is: 237,472.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,081.14 : 425,109.90 = 172,098.27 : x
  2. Step 2: Convert to fraction form
    308,081.14/425,109.90 = 172,098.27/x
  3. Step 3: Cross multiply
    308,081.14x = 425,109.90 × 172,098.27
  4. Step 4: Simplify right side
    308,081.14x = 73,160,678,995.24
  5. Step 5: Solve for x
    x = 73,160,678,995.24/308,081.14
  6. Step 6: Final answer
    x = 237,472.11

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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.