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Finding the Fourth Proportional to 263,705.80, 395,850.30 and 163,978.60

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Solution

The fourth proportional to 263,705.80, 395,850.30 and 163,978.60 is: 246,149.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,705.80 : 395,850.30 = 163,978.60 : x
  2. Step 2: Convert to fraction form
    263,705.80/395,850.30 = 163,978.60/x
  3. Step 3: Cross multiply
    263,705.80x = 395,850.30 × 163,978.60
  4. Step 4: Simplify right side
    263,705.80x = 64,910,978,003.58
  5. Step 5: Solve for x
    x = 64,910,978,003.58/263,705.80
  6. Step 6: Final answer
    x = 246,149.22

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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.