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Finding the Fourth Proportional to 218,799.26, 328,223.52 and 68,995.23

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Solution

The fourth proportional to 218,799.26, 328,223.52 and 68,995.23 is: 103,500.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,799.26 : 328,223.52 = 68,995.23 : x
  2. Step 2: Convert to fraction form
    218,799.26/328,223.52 = 68,995.23/x
  3. Step 3: Cross multiply
    218,799.26x = 328,223.52 × 68,995.23
  4. Step 4: Simplify right side
    218,799.26x = 22,645,857,253.81
  5. Step 5: Solve for x
    x = 22,645,857,253.81/218,799.26
  6. Step 6: Final answer
    x = 103,500.61

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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.