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Finding the Fourth Proportional to 228,801.28, 315,729.84 and 126,825.76

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Solution

The fourth proportional to 228,801.28, 315,729.84 and 126,825.76 is: 175,010.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,801.28 : 315,729.84 = 126,825.76 : x
  2. Step 2: Convert to fraction form
    228,801.28/315,729.84 = 126,825.76/x
  3. Step 3: Cross multiply
    228,801.28x = 315,729.84 × 126,825.76
  4. Step 4: Simplify right side
    228,801.28x = 40,042,676,912.68
  5. Step 5: Solve for x
    x = 40,042,676,912.68/228,801.28
  6. Step 6: Final answer
    x = 175,010.72

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1.5x scale

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.