Home / 260,769,268.20-391,153,902.30-78,992,826.60

Finding the Fourth Proportional to 260,769,268.20, 391,153,902.30 and 78,992,826.60

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Solution

The fourth proportional to 260,769,268.20, 391,153,902.30 and 78,992,826.60 is: 118,489,239.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,769,268.20 : 391,153,902.30 = 78,992,826.60 : x
  2. Step 2: Convert to fraction form
    260,769,268.20/391,153,902.30 = 78,992,826.60/x
  3. Step 3: Cross multiply
    260,769,268.20x = 391,153,902.30 × 78,992,826.60
  4. Step 4: Simplify right side
    260,769,268.20x = 30,898,352,378,297,240
  5. Step 5: Solve for x
    x = 30,898,352,378,297,240/260,769,268.20
  6. Step 6: Final answer
    x = 118,489,239.90

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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.