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Finding the Fourth Proportional to 263,489.85, 395,289.41 and 105,730.61

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Solution

The fourth proportional to 263,489.85, 395,289.41 and 105,730.61 is: 158,617.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,489.85 : 395,289.41 = 105,730.61 : x
  2. Step 2: Convert to fraction form
    263,489.85/395,289.41 = 105,730.61/x
  3. Step 3: Cross multiply
    263,489.85x = 395,289.41 × 105,730.61
  4. Step 4: Simplify right side
    263,489.85x = 41,794,190,445.84
  5. Step 5: Solve for x
    x = 41,794,190,445.84/263,489.85
  6. Step 6: Final answer
    x = 158,617.84

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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.