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Finding the Fourth Proportional to 263,249.56, 394,874.02 and 85,756.28

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Solution

The fourth proportional to 263,249.56, 394,874.02 and 85,756.28 is: 128,634.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,249.56 : 394,874.02 = 85,756.28 : x
  2. Step 2: Convert to fraction form
    263,249.56/394,874.02 = 85,756.28/x
  3. Step 3: Cross multiply
    263,249.56x = 394,874.02 × 85,756.28
  4. Step 4: Simplify right side
    263,249.56x = 33,862,927,023.85
  5. Step 5: Solve for x
    x = 33,862,927,023.85/263,249.56
  6. Step 6: Final answer
    x = 128,634.32

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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.