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Finding the Fourth Proportional to 308,082.54, 425,153.87 and 172,116.52

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Solution

The fourth proportional to 308,082.54, 425,153.87 and 172,116.52 is: 237,520.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,082.54 : 425,153.87 = 172,116.52 : x
  2. Step 2: Convert to fraction form
    308,082.54/425,153.87 = 172,116.52/x
  3. Step 3: Cross multiply
    308,082.54x = 425,153.87 × 172,116.52
  4. Step 4: Simplify right side
    308,082.54x = 73,176,003,708.35
  5. Step 5: Solve for x
    x = 73,176,003,708.35/308,082.54
  6. Step 6: Final answer
    x = 237,520.78

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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.