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Finding the Fourth Proportional to 225,361.44, 311,013.78 and 129,874.29

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Solution

The fourth proportional to 225,361.44, 311,013.78 and 129,874.29 is: 179,235.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,361.44 : 311,013.78 = 129,874.29 : x
  2. Step 2: Convert to fraction form
    225,361.44/311,013.78 = 129,874.29/x
  3. Step 3: Cross multiply
    225,361.44x = 311,013.78 × 129,874.29
  4. Step 4: Simplify right side
    225,361.44x = 40,392,692,204.39
  5. Step 5: Solve for x
    x = 40,392,692,204.39/225,361.44
  6. Step 6: Final answer
    x = 179,235.15

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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.