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Finding the Fourth Proportional to 275,667.56, 380,321.70 and 156,366.44

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Solution

The fourth proportional to 275,667.56, 380,321.70 and 156,366.44 is: 215,729.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,667.56 : 380,321.70 = 156,366.44 : x
  2. Step 2: Convert to fraction form
    275,667.56/380,321.70 = 156,366.44/x
  3. Step 3: Cross multiply
    275,667.56x = 380,321.70 × 156,366.44
  4. Step 4: Simplify right side
    275,667.56x = 59,469,550,283.75
  5. Step 5: Solve for x
    x = 59,469,550,283.75/275,667.56
  6. Step 6: Final answer
    x = 215,729.23

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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.