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Finding the Fourth Proportional to 218,117.80, 327,198.30 and 75,941.20

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Solution

The fourth proportional to 218,117.80, 327,198.30 and 75,941.20 is: 113,919.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,117.80 : 327,198.30 = 75,941.20 : x
  2. Step 2: Convert to fraction form
    218,117.80/327,198.30 = 75,941.20/x
  3. Step 3: Cross multiply
    218,117.80x = 327,198.30 × 75,941.20
  4. Step 4: Simplify right side
    218,117.80x = 24,847,831,539.96
  5. Step 5: Solve for x
    x = 24,847,831,539.96/218,117.80
  6. Step 6: Final answer
    x = 113,919.32

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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.