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Finding the Fourth Proportional to 218,451.78, 327,568.07 and 127,296.72

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Solution

The fourth proportional to 218,451.78, 327,568.07 and 127,296.72 is: 190,881.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,451.78 : 327,568.07 = 127,296.72 : x
  2. Step 2: Convert to fraction form
    218,451.78/327,568.07 = 127,296.72/x
  3. Step 3: Cross multiply
    218,451.78x = 327,568.07 × 127,296.72
  4. Step 4: Simplify right side
    218,451.78x = 41,698,340,887.73
  5. Step 5: Solve for x
    x = 41,698,340,887.73/218,451.78
  6. Step 6: Final answer
    x = 190,881.21

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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.