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Finding the Fourth Proportional to 263,240.82, 394,860.42 and 85,747.41

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Solution

The fourth proportional to 263,240.82, 394,860.42 and 85,747.41 is: 128,620.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,240.82 : 394,860.42 = 85,747.41 : x
  2. Step 2: Convert to fraction form
    263,240.82/394,860.42 = 85,747.41/x
  3. Step 3: Cross multiply
    263,240.82x = 394,860.42 × 85,747.41
  4. Step 4: Simplify right side
    263,240.82x = 33,858,258,326.51
  5. Step 5: Solve for x
    x = 33,858,258,326.51/263,240.82
  6. Step 6: Final answer
    x = 128,620.85

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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.