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Finding the Fourth Proportional to 218,408.67, 327,612.65 and 68,662.04

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Solution

The fourth proportional to 218,408.67, 327,612.65 and 68,662.04 is: 102,992.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,408.67 : 327,612.65 = 68,662.04 : x
  2. Step 2: Convert to fraction form
    218,408.67/327,612.65 = 68,662.04/x
  3. Step 3: Cross multiply
    218,408.67x = 327,612.65 × 68,662.04
  4. Step 4: Simplify right side
    218,408.67x = 22,494,550,897.43
  5. Step 5: Solve for x
    x = 22,494,550,897.43/218,408.67
  6. Step 6: Final answer
    x = 102,992.94

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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.