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Finding the Fourth Proportional to 263,016.80, 394,719.60 and 174,240.80

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Solution

The fourth proportional to 263,016.80, 394,719.60 and 174,240.80 is: 261,489.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,016.80 : 394,719.60 = 174,240.80 : x
  2. Step 2: Convert to fraction form
    263,016.80/394,719.60 = 174,240.80/x
  3. Step 3: Cross multiply
    263,016.80x = 394,719.60 × 174,240.80
  4. Step 4: Simplify right side
    263,016.80x = 68,776,258,879.68
  5. Step 5: Solve for x
    x = 68,776,258,879.68/263,016.80
  6. Step 6: Final answer
    x = 261,489.98

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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.