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Finding the Fourth Proportional to 218,755.44, 328,140.22 and 68,997.14

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Solution

The fourth proportional to 218,755.44, 328,140.22 and 68,997.14 is: 103,497.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,755.44 : 328,140.22 = 68,997.14 : x
  2. Step 2: Convert to fraction form
    218,755.44/328,140.22 = 68,997.14/x
  3. Step 3: Cross multiply
    218,755.44x = 328,140.22 × 68,997.14
  4. Step 4: Simplify right side
    218,755.44x = 22,640,736,698.97
  5. Step 5: Solve for x
    x = 22,640,736,698.97/218,755.44
  6. Step 6: Final answer
    x = 103,497.94

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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.