Home / 263,432.30-393,982.05-221,441.90

Finding the Fourth Proportional to 263,432.30, 393,982.05 and 221,441.90

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Solution

The fourth proportional to 263,432.30, 393,982.05 and 221,441.90 is: 331,182.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,432.30 : 393,982.05 = 221,441.90 : x
  2. Step 2: Convert to fraction form
    263,432.30/393,982.05 = 221,441.90/x
  3. Step 3: Cross multiply
    263,432.30x = 393,982.05 × 221,441.90
  4. Step 4: Simplify right side
    263,432.30x = 87,244,133,717.90
  5. Step 5: Solve for x
    x = 87,244,133,717.90/263,432.30
  6. Step 6: Final answer
    x = 331,182.37

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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.