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Finding the Fourth Proportional to 275,320.71, 379,920.24 and 154,445.22

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Solution

The fourth proportional to 275,320.71, 379,920.24 and 154,445.22 is: 213,121.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,320.71 : 379,920.24 = 154,445.22 : x
  2. Step 2: Convert to fraction form
    275,320.71/379,920.24 = 154,445.22/x
  3. Step 3: Cross multiply
    275,320.71x = 379,920.24 × 154,445.22
  4. Step 4: Simplify right side
    275,320.71x = 58,676,865,049.25
  5. Step 5: Solve for x
    x = 58,676,865,049.25/275,320.71
  6. Step 6: Final answer
    x = 213,121.87

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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.