Home / 260,872.45-391,364.88-80,954.35

Finding the Fourth Proportional to 260,872.45, 391,364.88 and 80,954.35

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Solution

The fourth proportional to 260,872.45, 391,364.88 and 80,954.35 is: 121,448.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,872.45 : 391,364.88 = 80,954.35 : x
  2. Step 2: Convert to fraction form
    260,872.45/391,364.88 = 80,954.35/x
  3. Step 3: Cross multiply
    260,872.45x = 391,364.88 × 80,954.35
  4. Step 4: Simplify right side
    260,872.45x = 31,682,689,473.23
  5. Step 5: Solve for x
    x = 31,682,689,473.23/260,872.45
  6. Step 6: Final answer
    x = 121,448.97

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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.