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Finding the Fourth Proportional to 308,553.80, 425,843.68 and 172,595.30

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Solution

The fourth proportional to 308,553.80, 425,843.68 and 172,595.30 is: 238,203.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,553.80 : 425,843.68 = 172,595.30 : x
  2. Step 2: Convert to fraction form
    308,553.80/425,843.68 = 172,595.30/x
  3. Step 3: Cross multiply
    308,553.80x = 425,843.68 × 172,595.30
  4. Step 4: Simplify right side
    308,553.80x = 73,498,617,702.70
  5. Step 5: Solve for x
    x = 73,498,617,702.70/308,553.80
  6. Step 6: Final answer
    x = 238,203.57

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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.