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Finding the Fourth Proportional to 263,359.60, 394,693.80 and 105,458.80

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Solution

The fourth proportional to 263,359.60, 394,693.80 and 105,458.80 is: 158,049.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,359.60 : 394,693.80 = 105,458.80 : x
  2. Step 2: Convert to fraction form
    263,359.60/394,693.80 = 105,458.80/x
  3. Step 3: Cross multiply
    263,359.60x = 394,693.80 × 105,458.80
  4. Step 4: Simplify right side
    263,359.60x = 41,623,934,515.44
  5. Step 5: Solve for x
    x = 41,623,934,515.44/263,359.60
  6. Step 6: Final answer
    x = 158,049.81

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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.