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Finding the Fourth Proportional to 281,882.43, 389,008.98 and 154,562.58

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Solution

The fourth proportional to 281,882.43, 389,008.98 and 154,562.58 is: 213,302.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,882.43 : 389,008.98 = 154,562.58 : x
  2. Step 2: Convert to fraction form
    281,882.43/389,008.98 = 154,562.58/x
  3. Step 3: Cross multiply
    281,882.43x = 389,008.98 × 154,562.58
  4. Step 4: Simplify right side
    281,882.43x = 60,126,231,591.97
  5. Step 5: Solve for x
    x = 60,126,231,591.97/281,882.43
  6. Step 6: Final answer
    x = 213,302.52

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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.