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Finding the Fourth Proportional to 393,474.40, 543,043.44 and 240,481.12

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Solution

The fourth proportional to 393,474.40, 543,043.44 and 240,481.12 is: 331,893.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,474.40 : 543,043.44 = 240,481.12 : x
  2. Step 2: Convert to fraction form
    393,474.40/543,043.44 = 240,481.12/x
  3. Step 3: Cross multiply
    393,474.40x = 543,043.44 × 240,481.12
  4. Step 4: Simplify right side
    393,474.40x = 130,591,694,659.85
  5. Step 5: Solve for x
    x = 130,591,694,659.85/393,474.40
  6. Step 6: Final answer
    x = 331,893.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.