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Finding the Fourth Proportional to 275,390.74, 379,824.96 and 199,195.66

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Solution

The fourth proportional to 275,390.74, 379,824.96 and 199,195.66 is: 274,735.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,390.74 : 379,824.96 = 199,195.66 : x
  2. Step 2: Convert to fraction form
    275,390.74/379,824.96 = 199,195.66/x
  3. Step 3: Cross multiply
    275,390.74x = 379,824.96 × 199,195.66
  4. Step 4: Simplify right side
    275,390.74x = 75,659,483,591.67
  5. Step 5: Solve for x
    x = 75,659,483,591.67/275,390.74
  6. Step 6: Final answer
    x = 274,735.03

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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.