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Finding the Fourth Proportional to 218,620.80, 328,084.80 and 94,051.20

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Solution

The fourth proportional to 218,620.80, 328,084.80 and 94,051.20 is: 141,142.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,620.80 : 328,084.80 = 94,051.20 : x
  2. Step 2: Convert to fraction form
    218,620.80/328,084.80 = 94,051.20/x
  3. Step 3: Cross multiply
    218,620.80x = 328,084.80 × 94,051.20
  4. Step 4: Simplify right side
    218,620.80x = 30,856,769,141.76
  5. Step 5: Solve for x
    x = 30,856,769,141.76/218,620.80
  6. Step 6: Final answer
    x = 141,142.88

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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.