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Finding the Fourth Proportional to 305,588.80, 458,383.20 and 80,983.90

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Solution

The fourth proportional to 305,588.80, 458,383.20 and 80,983.90 is: 121,475.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,588.80 : 458,383.20 = 80,983.90 : x
  2. Step 2: Convert to fraction form
    305,588.80/458,383.20 = 80,983.90/x
  3. Step 3: Cross multiply
    305,588.80x = 458,383.20 × 80,983.90
  4. Step 4: Simplify right side
    305,588.80x = 37,121,659,230.48
  5. Step 5: Solve for x
    x = 37,121,659,230.48/305,588.80
  6. Step 6: Final answer
    x = 121,475.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.