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Finding the Fourth Proportional to 275,105.50, 412,630.61 and 75,445.97

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Solution

The fourth proportional to 275,105.50, 412,630.61 and 75,445.97 is: 113,161.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,105.50 : 412,630.61 = 75,445.97 : x
  2. Step 2: Convert to fraction form
    275,105.50/412,630.61 = 75,445.97/x
  3. Step 3: Cross multiply
    275,105.50x = 412,630.61 × 75,445.97
  4. Step 4: Simplify right side
    275,105.50x = 31,131,314,182.76
  5. Step 5: Solve for x
    x = 31,131,314,182.76/275,105.50
  6. Step 6: Final answer
    x = 113,161.37

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1.5x scale

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.