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Finding the Fourth Proportional to 218,595.87, 327,943.22 and 66,806.73

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Solution

The fourth proportional to 218,595.87, 327,943.22 and 66,806.73 is: 100,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,595.87 : 327,943.22 = 66,806.73 : x
  2. Step 2: Convert to fraction form
    218,595.87/327,943.22 = 66,806.73/x
  3. Step 3: Cross multiply
    218,595.87x = 327,943.22 × 66,806.73
  4. Step 4: Simplify right side
    218,595.87x = 21,908,813,819.84
  5. Step 5: Solve for x
    x = 21,908,813,819.84/218,595.87
  6. Step 6: Final answer
    x = 100,225.20

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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.