Home / 260,775,515.61-391,223,777.15-85,892,273.70

Finding the Fourth Proportional to 260,775,515.61, 391,223,777.15 and 85,892,273.70

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Solution

The fourth proportional to 260,775,515.61, 391,223,777.15 and 85,892,273.70 is: 128,858,338.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,775,515.61 : 391,223,777.15 = 85,892,273.70 : x
  2. Step 2: Convert to fraction form
    260,775,515.61/391,223,777.15 = 85,892,273.70/x
  3. Step 3: Cross multiply
    260,775,515.61x = 391,223,777.15 × 85,892,273.70
  4. Step 4: Simplify right side
    260,775,515.61x = 33,603,099,744,486,144
  5. Step 5: Solve for x
    x = 33,603,099,744,486,144/260,775,515.61
  6. Step 6: Final answer
    x = 128,858,338.81

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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.