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Finding the Fourth Proportional to 308,553.79, 425,843.67 and 172,595.29

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Solution

The fourth proportional to 308,553.79, 425,843.67 and 172,595.29 is: 238,203.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,553.79 : 425,843.67 = 172,595.29 : x
  2. Step 2: Convert to fraction form
    308,553.79/425,843.67 = 172,595.29/x
  3. Step 3: Cross multiply
    308,553.79x = 425,843.67 × 172,595.29
  4. Step 4: Simplify right side
    308,553.79x = 73,498,611,718.31
  5. Step 5: Solve for x
    x = 73,498,611,718.31/308,553.79
  6. Step 6: Final answer
    x = 238,203.56

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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.