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Finding the Fourth Proportional to 199,236.70, 298,935.15 and 80,917.30

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Solution

The fourth proportional to 199,236.70, 298,935.15 and 80,917.30 is: 121,408.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,236.70 : 298,935.15 = 80,917.30 : x
  2. Step 2: Convert to fraction form
    199,236.70/298,935.15 = 80,917.30/x
  3. Step 3: Cross multiply
    199,236.70x = 298,935.15 × 80,917.30
  4. Step 4: Simplify right side
    199,236.70x = 24,189,025,213.10
  5. Step 5: Solve for x
    x = 24,189,025,213.10/199,236.70
  6. Step 6: Final answer
    x = 121,408.48

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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.