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Finding the Fourth Proportional to 263,342.40, 394,754.40 and 130,243.20

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Solution

The fourth proportional to 263,342.40, 394,754.40 and 130,243.20 is: 195,236.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,342.40 : 394,754.40 = 130,243.20 : x
  2. Step 2: Convert to fraction form
    263,342.40/394,754.40 = 130,243.20/x
  3. Step 3: Cross multiply
    263,342.40x = 394,754.40 × 130,243.20
  4. Step 4: Simplify right side
    263,342.40x = 51,414,076,270.08
  5. Step 5: Solve for x
    x = 51,414,076,270.08/263,342.40
  6. Step 6: Final answer
    x = 195,236.61

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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.