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Finding the Fourth Proportional to 218,998.80, 327,883.80 and 212,854.80

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Solution

The fourth proportional to 218,998.80, 327,883.80 and 212,854.80 is: 318,685.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,998.80 : 327,883.80 = 212,854.80 : x
  2. Step 2: Convert to fraction form
    218,998.80/327,883.80 = 212,854.80/x
  3. Step 3: Cross multiply
    218,998.80x = 327,883.80 × 212,854.80
  4. Step 4: Simplify right side
    218,998.80x = 69,791,640,672.24
  5. Step 5: Solve for x
    x = 69,791,640,672.24/218,998.80
  6. Step 6: Final answer
    x = 318,685.04

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1.5x scale

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.