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Finding the Fourth Proportional to 218,240.31, 327,374.29 and 68,486.51

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Solution

The fourth proportional to 218,240.31, 327,374.29 and 68,486.51 is: 102,734.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,240.31 : 327,374.29 = 68,486.51 : x
  2. Step 2: Convert to fraction form
    218,240.31/327,374.29 = 68,486.51/x
  3. Step 3: Cross multiply
    218,240.31x = 327,374.29 × 68,486.51
  4. Step 4: Simplify right side
    218,240.31x = 22,420,722,585.83
  5. Step 5: Solve for x
    x = 22,420,722,585.83/218,240.31
  6. Step 6: Final answer
    x = 102,734.10

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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.