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Finding the Fourth Proportional to 308,576.29, 425,874.72 and 172,617.79

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Solution

The fourth proportional to 308,576.29, 425,874.72 and 172,617.79 is: 238,234.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,576.29 : 425,874.72 = 172,617.79 : x
  2. Step 2: Convert to fraction form
    308,576.29/425,874.72 = 172,617.79/x
  3. Step 3: Cross multiply
    308,576.29x = 425,874.72 × 172,617.79
  4. Step 4: Simplify right side
    308,576.29x = 73,513,552,983.27
  5. Step 5: Solve for x
    x = 73,513,552,983.27/308,576.29
  6. Step 6: Final answer
    x = 238,234.61

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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.