Home / 260,802,480.80-391,203,721.20-256,976,105.60

Finding the Fourth Proportional to 260,802,480.80, 391,203,721.20 and 256,976,105.60

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Solution

The fourth proportional to 260,802,480.80, 391,203,721.20 and 256,976,105.60 is: 385,464,158.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,802,480.80 : 391,203,721.20 = 256,976,105.60 : x
  2. Step 2: Convert to fraction form
    260,802,480.80/391,203,721.20 = 256,976,105.60/x
  3. Step 3: Cross multiply
    260,802,480.80x = 391,203,721.20 × 256,976,105.60
  4. Step 4: Simplify right side
    260,802,480.80x = 100,530,008,770,204,160
  5. Step 5: Solve for x
    x = 100,530,008,770,204,160/260,802,480.80
  6. Step 6: Final answer
    x = 385,464,158.40

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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.