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Finding the Fourth Proportional to 263,247.56, 394,871.02 and 85,754.28

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Solution

The fourth proportional to 263,247.56, 394,871.02 and 85,754.28 is: 128,631.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,247.56 : 394,871.02 = 85,754.28 : x
  2. Step 2: Convert to fraction form
    263,247.56/394,871.02 = 85,754.28/x
  3. Step 3: Cross multiply
    263,247.56x = 394,871.02 × 85,754.28
  4. Step 4: Simplify right side
    263,247.56x = 33,861,880,012.97
  5. Step 5: Solve for x
    x = 33,861,880,012.97/263,247.56
  6. Step 6: Final answer
    x = 128,631.32

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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.