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Finding the Fourth Proportional to 275,947.38, 380,838.84 and 153,451.90

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Solution

The fourth proportional to 275,947.38, 380,838.84 and 153,451.90 is: 211,781.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,947.38 : 380,838.84 = 153,451.90 : x
  2. Step 2: Convert to fraction form
    275,947.38/380,838.84 = 153,451.90/x
  3. Step 3: Cross multiply
    275,947.38x = 380,838.84 × 153,451.90
  4. Step 4: Simplify right side
    275,947.38x = 58,440,443,591.80
  5. Step 5: Solve for x
    x = 58,440,443,591.80/275,947.38
  6. Step 6: Final answer
    x = 211,781.11

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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.