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Finding the Fourth Proportional to 627,739.20, 941,608.80 and 206,992.80

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Solution

The fourth proportional to 627,739.20, 941,608.80 and 206,992.80 is: 310,489.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,739.20 : 941,608.80 = 206,992.80 : x
  2. Step 2: Convert to fraction form
    627,739.20/941,608.80 = 206,992.80/x
  3. Step 3: Cross multiply
    627,739.20x = 941,608.80 × 206,992.80
  4. Step 4: Simplify right side
    627,739.20x = 194,906,242,016.64
  5. Step 5: Solve for x
    x = 194,906,242,016.64/627,739.20
  6. Step 6: Final answer
    x = 310,489.20

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Similar ratio
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1.5x scale

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.