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Finding the Fourth Proportional to 308,167.80, 425,269.49 and 172,202.09

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Solution

The fourth proportional to 308,167.80, 425,269.49 and 172,202.09 is: 237,637.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,167.80 : 425,269.49 = 172,202.09 : x
  2. Step 2: Convert to fraction form
    308,167.80/425,269.49 = 172,202.09/x
  3. Step 3: Cross multiply
    308,167.80x = 425,269.49 × 172,202.09
  4. Step 4: Simplify right side
    308,167.80x = 73,232,292,003.88
  5. Step 5: Solve for x
    x = 73,232,292,003.88/308,167.80
  6. Step 6: Final answer
    x = 237,637.72

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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.