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Finding the Fourth Proportional to 218,611.34, 327,867.80 and 142,685.98

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Solution

The fourth proportional to 218,611.34, 327,867.80 and 142,685.98 is: 213,996.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,611.34 : 327,867.80 = 142,685.98 : x
  2. Step 2: Convert to fraction form
    218,611.34/327,867.80 = 142,685.98/x
  3. Step 3: Cross multiply
    218,611.34x = 327,867.80 × 142,685.98
  4. Step 4: Simplify right side
    218,611.34x = 46,782,138,353.44
  5. Step 5: Solve for x
    x = 46,782,138,353.44/218,611.34
  6. Step 6: Final answer
    x = 213,996.85

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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.