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Finding the Fourth Proportional to 218,367.69, 327,385.08 and 68,521.56

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Solution

The fourth proportional to 218,367.69, 327,385.08 and 68,521.56 is: 102,730.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,367.69 : 327,385.08 = 68,521.56 : x
  2. Step 2: Convert to fraction form
    218,367.69/327,385.08 = 68,521.56/x
  3. Step 3: Cross multiply
    218,367.69x = 327,385.08 × 68,521.56
  4. Step 4: Simplify right side
    218,367.69x = 22,432,936,402.32
  5. Step 5: Solve for x
    x = 22,432,936,402.32/218,367.69
  6. Step 6: Final answer
    x = 102,730.11

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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.