Home / 263,455.30-394,016.55-221,464.90

Finding the Fourth Proportional to 263,455.30, 394,016.55 and 221,464.90

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Solution

The fourth proportional to 263,455.30, 394,016.55 and 221,464.90 is: 331,216.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,455.30 : 394,016.55 = 221,464.90 : x
  2. Step 2: Convert to fraction form
    263,455.30/394,016.55 = 221,464.90/x
  3. Step 3: Cross multiply
    263,455.30x = 394,016.55 × 221,464.90
  4. Step 4: Simplify right side
    263,455.30x = 87,260,835,844.10
  5. Step 5: Solve for x
    x = 87,260,835,844.10/263,455.30
  6. Step 6: Final answer
    x = 331,216.85

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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.