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Finding the Fourth Proportional to 218,114.40, 327,171.60 and 216,040.80

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Solution

The fourth proportional to 218,114.40, 327,171.60 and 216,040.80 is: 324,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,114.40 : 327,171.60 = 216,040.80 : x
  2. Step 2: Convert to fraction form
    218,114.40/327,171.60 = 216,040.80/x
  3. Step 3: Cross multiply
    218,114.40x = 327,171.60 × 216,040.80
  4. Step 4: Simplify right side
    218,114.40x = 70,682,414,201.28
  5. Step 5: Solve for x
    x = 70,682,414,201.28/218,114.40
  6. Step 6: Final answer
    x = 324,061.20

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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.