Home / 260,775,517.36-391,223,779.78-85,892,275.44

Finding the Fourth Proportional to 260,775,517.36, 391,223,779.78 and 85,892,275.44

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Solution

The fourth proportional to 260,775,517.36, 391,223,779.78 and 85,892,275.44 is: 128,858,341.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,775,517.36 : 391,223,779.78 = 85,892,275.44 : x
  2. Step 2: Convert to fraction form
    260,775,517.36/391,223,779.78 = 85,892,275.44/x
  3. Step 3: Cross multiply
    260,775,517.36x = 391,223,779.78 × 85,892,275.44
  4. Step 4: Simplify right side
    260,775,517.36x = 33,603,100,651,541,660
  5. Step 5: Solve for x
    x = 33,603,100,651,541,660/260,775,517.36
  6. Step 6: Final answer
    x = 128,858,341.43

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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.