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Finding the Fourth Proportional to 228,361.97, 315,129.83 and 126,377.88

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Solution

The fourth proportional to 228,361.97, 315,129.83 and 126,377.88 is: 174,396.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,361.97 : 315,129.83 = 126,377.88 : x
  2. Step 2: Convert to fraction form
    228,361.97/315,129.83 = 126,377.88/x
  3. Step 3: Cross multiply
    228,361.97x = 315,129.83 × 126,377.88
  4. Step 4: Simplify right side
    228,361.97x = 39,825,439,208.27
  5. Step 5: Solve for x
    x = 39,825,439,208.27/228,361.97
  6. Step 6: Final answer
    x = 174,396.11

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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.