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Finding the Fourth Proportional to 308,233.56, 425,359.80 and 216,481.80

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Solution

The fourth proportional to 308,233.56, 425,359.80 and 216,481.80 is: 298,743.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,233.56 : 425,359.80 = 216,481.80 : x
  2. Step 2: Convert to fraction form
    308,233.56/425,359.80 = 216,481.80/x
  3. Step 3: Cross multiply
    308,233.56x = 425,359.80 × 216,481.80
  4. Step 4: Simplify right side
    308,233.56x = 92,082,655,151.64
  5. Step 5: Solve for x
    x = 92,082,655,151.64/308,233.56
  6. Step 6: Final answer
    x = 298,743.12

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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.