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Finding the Fourth Proportional to 218,571.03, 327,908.16 and 68,811.30

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Solution

The fourth proportional to 218,571.03, 327,908.16 and 68,811.30 is: 103,233.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,571.03 : 327,908.16 = 68,811.30 : x
  2. Step 2: Convert to fraction form
    218,571.03/327,908.16 = 68,811.30/x
  3. Step 3: Cross multiply
    218,571.03x = 327,908.16 × 68,811.30
  4. Step 4: Simplify right side
    218,571.03x = 22,563,786,770.21
  5. Step 5: Solve for x
    x = 22,563,786,770.21/218,571.03
  6. Step 6: Final answer
    x = 103,233.20

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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.