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Finding the Fourth Proportional to 218,429.33, 327,643.65 and 68,682.65

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Solution

The fourth proportional to 218,429.33, 327,643.65 and 68,682.65 is: 103,023.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,429.33 : 327,643.65 = 68,682.65 : x
  2. Step 2: Convert to fraction form
    218,429.33/327,643.65 = 68,682.65/x
  3. Step 3: Cross multiply
    218,429.33x = 327,643.65 × 68,682.65
  4. Step 4: Simplify right side
    218,429.33x = 22,503,432,499.45
  5. Step 5: Solve for x
    x = 22,503,432,499.45/218,429.33
  6. Step 6: Final answer
    x = 103,023.86

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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.