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Finding the Fourth Proportional to 260,930.88, 391,272.95 and 101,081.68

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Solution

The fourth proportional to 260,930.88, 391,272.95 and 101,081.68 is: 151,574.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,930.88 : 391,272.95 = 101,081.68 : x
  2. Step 2: Convert to fraction form
    260,930.88/391,272.95 = 101,081.68/x
  3. Step 3: Cross multiply
    260,930.88x = 391,272.95 × 101,081.68
  4. Step 4: Simplify right side
    260,930.88x = 39,550,524,662.78
  5. Step 5: Solve for x
    x = 39,550,524,662.78/260,930.88
  6. Step 6: Final answer
    x = 151,574.72

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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.