Home / 260,741.22-391,172.85-80,817.24

Finding the Fourth Proportional to 260,741.22, 391,172.85 and 80,817.24

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Solution

The fourth proportional to 260,741.22, 391,172.85 and 80,817.24 is: 121,244.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,741.22 : 391,172.85 = 80,817.24 : x
  2. Step 2: Convert to fraction form
    260,741.22/391,172.85 = 80,817.24/x
  3. Step 3: Cross multiply
    260,741.22x = 391,172.85 × 80,817.24
  4. Step 4: Simplify right side
    260,741.22x = 31,613,510,099.93
  5. Step 5: Solve for x
    x = 31,613,510,099.93/260,741.22
  6. Step 6: Final answer
    x = 121,244.77

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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.