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Finding the Fourth Proportional to 192,546.64, 288,820.76 and 126,405.28

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Solution

The fourth proportional to 192,546.64, 288,820.76 and 126,405.28 is: 189,608.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,546.64 : 288,820.76 = 126,405.28 : x
  2. Step 2: Convert to fraction form
    192,546.64/288,820.76 = 126,405.28/x
  3. Step 3: Cross multiply
    192,546.64x = 288,820.76 × 126,405.28
  4. Step 4: Simplify right side
    192,546.64x = 36,508,469,037.61
  5. Step 5: Solve for x
    x = 36,508,469,037.61/192,546.64
  6. Step 6: Final answer
    x = 189,608.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.