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Finding the Fourth Proportional to 218,604.58, 327,918.64 and 68,856.60

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Solution

The fourth proportional to 218,604.58, 327,918.64 and 68,856.60 is: 103,288.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,604.58 : 327,918.64 = 68,856.60 : x
  2. Step 2: Convert to fraction form
    218,604.58/327,918.64 = 68,856.60/x
  3. Step 3: Cross multiply
    218,604.58x = 327,918.64 × 68,856.60
  4. Step 4: Simplify right side
    218,604.58x = 22,579,362,627.02
  5. Step 5: Solve for x
    x = 22,579,362,627.02/218,604.58
  6. Step 6: Final answer
    x = 103,288.61

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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.