Home / 263,441.80-393,996.30-221,451.40

Finding the Fourth Proportional to 263,441.80, 393,996.30 and 221,451.40

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Solution

The fourth proportional to 263,441.80, 393,996.30 and 221,451.40 is: 331,196.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,441.80 : 393,996.30 = 221,451.40 : x
  2. Step 2: Convert to fraction form
    263,441.80/393,996.30 = 221,451.40/x
  3. Step 3: Cross multiply
    263,441.80x = 393,996.30 × 221,451.40
  4. Step 4: Simplify right side
    263,441.80x = 87,251,032,229.82
  5. Step 5: Solve for x
    x = 87,251,032,229.82/263,441.80
  6. Step 6: Final answer
    x = 331,196.61

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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.