Home / 260,802,720.30-391,204,080.45-256,976,345.10

Finding the Fourth Proportional to 260,802,720.30, 391,204,080.45 and 256,976,345.10

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Solution

The fourth proportional to 260,802,720.30, 391,204,080.45 and 256,976,345.10 is: 385,464,517.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,802,720.30 : 391,204,080.45 = 256,976,345.10 : x
  2. Step 2: Convert to fraction form
    260,802,720.30/391,204,080.45 = 256,976,345.10/x
  3. Step 3: Cross multiply
    260,802,720.30x = 391,204,080.45 × 256,976,345.10
  4. Step 4: Simplify right side
    260,802,720.30x = 100,530,194,782,247,360
  5. Step 5: Solve for x
    x = 100,530,194,782,247,360/260,802,720.30
  6. Step 6: Final answer
    x = 385,464,517.65

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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.