Home / 263,442.30-393,997.05-221,451.90

Finding the Fourth Proportional to 263,442.30, 393,997.05 and 221,451.90

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Solution

The fourth proportional to 263,442.30, 393,997.05 and 221,451.90 is: 331,197.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,442.30 : 393,997.05 = 221,451.90 : x
  2. Step 2: Convert to fraction form
    263,442.30/393,997.05 = 221,451.90/x
  3. Step 3: Cross multiply
    263,442.30x = 393,997.05 × 221,451.90
  4. Step 4: Simplify right side
    263,442.30x = 87,251,395,316.90
  5. Step 5: Solve for x
    x = 87,251,395,316.90/263,442.30
  6. Step 6: Final answer
    x = 331,197.36

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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.