Home / 263,443.30-393,998.55-221,452.90

Finding the Fourth Proportional to 263,443.30, 393,998.55 and 221,452.90

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Solution

The fourth proportional to 263,443.30, 393,998.55 and 221,452.90 is: 331,198.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,443.30 : 393,998.55 = 221,452.90 : x
  2. Step 2: Convert to fraction form
    263,443.30/393,998.55 = 221,452.90/x
  3. Step 3: Cross multiply
    263,443.30x = 393,998.55 × 221,452.90
  4. Step 4: Simplify right side
    263,443.30x = 87,252,121,493.30
  5. Step 5: Solve for x
    x = 87,252,121,493.30/263,443.30
  6. Step 6: Final answer
    x = 331,198.86

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1.5x scale

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.