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Finding the Fourth Proportional to 218,295.60, 327,378.60 and 85,099.20

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Solution

The fourth proportional to 218,295.60, 327,378.60 and 85,099.20 is: 127,623.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,295.60 : 327,378.60 = 85,099.20 : x
  2. Step 2: Convert to fraction form
    218,295.60/327,378.60 = 85,099.20/x
  3. Step 3: Cross multiply
    218,295.60x = 327,378.60 × 85,099.20
  4. Step 4: Simplify right side
    218,295.60x = 27,859,656,957.12
  5. Step 5: Solve for x
    x = 27,859,656,957.12/218,295.60
  6. Step 6: Final answer
    x = 127,623.54

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