Home / 445,490.92-667,734.38-221,012.24

Finding the Fourth Proportional to 445,490.92, 667,734.38 and 221,012.24

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Solution

The fourth proportional to 445,490.92, 667,734.38 and 221,012.24 is: 331,269.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,490.92 : 667,734.38 = 221,012.24 : x
  2. Step 2: Convert to fraction form
    445,490.92/667,734.38 = 221,012.24/x
  3. Step 3: Cross multiply
    445,490.92x = 667,734.38 × 221,012.24
  4. Step 4: Simplify right side
    445,490.92x = 147,577,469,943.75
  5. Step 5: Solve for x
    x = 147,577,469,943.75/445,490.92
  6. Step 6: Final answer
    x = 331,269.31

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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.