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Finding the Fourth Proportional to 263,449.60, 395,368.80 and 105,791.20

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Solution

The fourth proportional to 263,449.60, 395,368.80 and 105,791.20 is: 158,764.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,449.60 : 395,368.80 = 105,791.20 : x
  2. Step 2: Convert to fraction form
    263,449.60/395,368.80 = 105,791.20/x
  3. Step 3: Cross multiply
    263,449.60x = 395,368.80 × 105,791.20
  4. Step 4: Simplify right side
    263,449.60x = 41,826,539,794.56
  5. Step 5: Solve for x
    x = 41,826,539,794.56/263,449.60
  6. Step 6: Final answer
    x = 158,764.86

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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.