Home / 260,741.84-391,173.77-80,817.86

Finding the Fourth Proportional to 260,741.84, 391,173.77 and 80,817.86

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Solution

The fourth proportional to 260,741.84, 391,173.77 and 80,817.86 is: 121,245.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,741.84 : 391,173.77 = 80,817.86 : x
  2. Step 2: Convert to fraction form
    260,741.84/391,173.77 = 80,817.86/x
  3. Step 3: Cross multiply
    260,741.84x = 391,173.77 × 80,817.86
  4. Step 4: Simplify right side
    260,741.84x = 31,613,824,619.57
  5. Step 5: Solve for x
    x = 31,613,824,619.57/260,741.84
  6. Step 6: Final answer
    x = 121,245.69

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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.