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Finding the Fourth Proportional to 275,412.48, 379,854.96 and 199,217.40

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Solution

The fourth proportional to 275,412.48, 379,854.96 and 199,217.40 is: 274,765.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,412.48 : 379,854.96 = 199,217.40 : x
  2. Step 2: Convert to fraction form
    275,412.48/379,854.96 = 199,217.40/x
  3. Step 3: Cross multiply
    275,412.48x = 379,854.96 × 199,217.40
  4. Step 4: Simplify right side
    275,412.48x = 75,673,717,508.30
  5. Step 5: Solve for x
    x = 75,673,717,508.30/275,412.48
  6. Step 6: Final answer
    x = 274,765.03

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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.