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Finding the Fourth Proportional to 275,076.80, 412,616.72 and 125,212.28

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Solution

The fourth proportional to 275,076.80, 412,616.72 and 125,212.28 is: 187,819.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,076.80 : 412,616.72 = 125,212.28 : x
  2. Step 2: Convert to fraction form
    275,076.80/412,616.72 = 125,212.28/x
  3. Step 3: Cross multiply
    275,076.80x = 412,616.72 × 125,212.28
  4. Step 4: Simplify right side
    275,076.80x = 51,664,677,588.18
  5. Step 5: Solve for x
    x = 51,664,677,588.18/275,076.80
  6. Step 6: Final answer
    x = 187,819.11

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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.