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Finding the Fourth Proportional to 218,429.72, 327,644.28 and 68,683.10

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Solution

The fourth proportional to 218,429.72, 327,644.28 and 68,683.10 is: 103,024.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,429.72 : 327,644.28 = 68,683.10 : x
  2. Step 2: Convert to fraction form
    218,429.72/327,644.28 = 68,683.10/x
  3. Step 3: Cross multiply
    218,429.72x = 327,644.28 × 68,683.10
  4. Step 4: Simplify right side
    218,429.72x = 22,503,623,209.45
  5. Step 5: Solve for x
    x = 22,503,623,209.45/218,429.72
  6. Step 6: Final answer
    x = 103,024.55

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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.