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Finding the Fourth Proportional to 308,006.67, 425,044.74 and 172,042.56

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Solution

The fourth proportional to 308,006.67, 425,044.74 and 172,042.56 is: 237,416.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,006.67 : 425,044.74 = 172,042.56 : x
  2. Step 2: Convert to fraction form
    308,006.67/425,044.74 = 172,042.56/x
  3. Step 3: Cross multiply
    308,006.67x = 425,044.74 × 172,042.56
  4. Step 4: Simplify right side
    308,006.67x = 73,125,785,184.13
  5. Step 5: Solve for x
    x = 73,125,785,184.13/308,006.67
  6. Step 6: Final answer
    x = 237,416.24

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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.