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Finding the Fourth Proportional to 308,304.48, 425,451.20 and 172,338.72

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Solution

The fourth proportional to 308,304.48, 425,451.20 and 172,338.72 is: 237,822.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,304.48 : 425,451.20 = 172,338.72 : x
  2. Step 2: Convert to fraction form
    308,304.48/425,451.20 = 172,338.72/x
  3. Step 3: Cross multiply
    308,304.48x = 425,451.20 × 172,338.72
  4. Step 4: Simplify right side
    308,304.48x = 73,321,715,230.46
  5. Step 5: Solve for x
    x = 73,321,715,230.46/308,304.48
  6. Step 6: Final answer
    x = 237,822.41

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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.