Home / 260,881.27-391,302.78-83,340.61

Finding the Fourth Proportional to 260,881.27, 391,302.78 and 83,340.61

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Solution

The fourth proportional to 260,881.27, 391,302.78 and 83,340.61 is: 125,004.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,881.27 : 391,302.78 = 83,340.61 : x
  2. Step 2: Convert to fraction form
    260,881.27/391,302.78 = 83,340.61/x
  3. Step 3: Cross multiply
    260,881.27x = 391,302.78 × 83,340.61
  4. Step 4: Simplify right side
    260,881.27x = 32,611,412,379.90
  5. Step 5: Solve for x
    x = 32,611,412,379.90/260,881.27
  6. Step 6: Final answer
    x = 125,004.81

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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.