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Finding the Fourth Proportional to 218,152.77, 327,219.60 and 68,389.65

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Solution

The fourth proportional to 218,152.77, 327,219.60 and 68,389.65 is: 102,581.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,152.77 : 327,219.60 = 68,389.65 : x
  2. Step 2: Convert to fraction form
    218,152.77/327,219.60 = 68,389.65/x
  3. Step 3: Cross multiply
    218,152.77x = 327,219.60 × 68,389.65
  4. Step 4: Simplify right side
    218,152.77x = 22,378,433,917.14
  5. Step 5: Solve for x
    x = 22,378,433,917.14/218,152.77
  6. Step 6: Final answer
    x = 102,581.48

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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.