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Finding the Fourth Proportional to 281,499.13, 388,471.53 and 168,321.88

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Solution

The fourth proportional to 281,499.13, 388,471.53 and 168,321.88 is: 232,285.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,499.13 : 388,471.53 = 168,321.88 : x
  2. Step 2: Convert to fraction form
    281,499.13/388,471.53 = 168,321.88/x
  3. Step 3: Cross multiply
    281,499.13x = 388,471.53 × 168,321.88
  4. Step 4: Simplify right side
    281,499.13x = 65,388,255,472.11
  5. Step 5: Solve for x
    x = 65,388,255,472.11/281,499.13
  6. Step 6: Final answer
    x = 232,285.82

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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.