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Finding the Fourth Proportional to 218,239.74, 327,373.46 and 68,485.95

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Solution

The fourth proportional to 218,239.74, 327,373.46 and 68,485.95 is: 102,733.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,239.74 : 327,373.46 = 68,485.95 : x
  2. Step 2: Convert to fraction form
    218,239.74/327,373.46 = 68,485.95/x
  3. Step 3: Cross multiply
    218,239.74x = 327,373.46 × 68,485.95
  4. Step 4: Simplify right side
    218,239.74x = 22,420,482,070.46
  5. Step 5: Solve for x
    x = 22,420,482,070.46/218,239.74
  6. Step 6: Final answer
    x = 102,733.27

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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.