Home / 331,310.71-496,991.25-128,819.82

Finding the Fourth Proportional to 331,310.71, 496,991.25 and 128,819.82

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Solution

The fourth proportional to 331,310.71, 496,991.25 and 128,819.82 is: 193,239.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,310.71 : 496,991.25 = 128,819.82 : x
  2. Step 2: Convert to fraction form
    331,310.71/496,991.25 = 128,819.82/x
  3. Step 3: Cross multiply
    331,310.71x = 496,991.25 × 128,819.82
  4. Step 4: Simplify right side
    331,310.71x = 64,022,325,230.29
  5. Step 5: Solve for x
    x = 64,022,325,230.29/331,310.71
  6. Step 6: Final answer
    x = 193,239.53

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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.