Home / 218,801.20-328,172.64-61,016.44

Finding the Fourth Proportional to 218,801.20, 328,172.64 and 61,016.44

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Solution

The fourth proportional to 218,801.20, 328,172.64 and 61,016.44 is: 91,516.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,801.20 : 328,172.64 = 61,016.44 : x
  2. Step 2: Convert to fraction form
    218,801.20/328,172.64 = 61,016.44/x
  3. Step 3: Cross multiply
    218,801.20x = 328,172.64 × 61,016.44
  4. Step 4: Simplify right side
    218,801.20x = 20,023,926,198.20
  5. Step 5: Solve for x
    x = 20,023,926,198.20/218,801.20
  6. Step 6: Final answer
    x = 91,516.53

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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.