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Finding the Fourth Proportional to 218,664.46, 328,092.37 and 76,611.98

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Solution

The fourth proportional to 218,664.46, 328,092.37 and 76,611.98 is: 114,951.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,664.46 : 328,092.37 = 76,611.98 : x
  2. Step 2: Convert to fraction form
    218,664.46/328,092.37 = 76,611.98/x
  3. Step 3: Cross multiply
    218,664.46x = 328,092.37 × 76,611.98
  4. Step 4: Simplify right side
    218,664.46x = 25,135,805,302.72
  5. Step 5: Solve for x
    x = 25,135,805,302.72/218,664.46
  6. Step 6: Final answer
    x = 114,951.49

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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.