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Finding the Fourth Proportional to 263,052.80, 394,579.20 and 105,305.60

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Solution

The fourth proportional to 263,052.80, 394,579.20 and 105,305.60 is: 157,958.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,052.80 : 394,579.20 = 105,305.60 : x
  2. Step 2: Convert to fraction form
    263,052.80/394,579.20 = 105,305.60/x
  3. Step 3: Cross multiply
    263,052.80x = 394,579.20 × 105,305.60
  4. Step 4: Simplify right side
    263,052.80x = 41,551,399,403.52
  5. Step 5: Solve for x
    x = 41,551,399,403.52/263,052.80
  6. Step 6: Final answer
    x = 157,958.40

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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.