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Finding the Fourth Proportional to 260,834.69, 391,219.36 and 83,326.97

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Solution

The fourth proportional to 260,834.69, 391,219.36 and 83,326.97 is: 124,980.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,834.69 : 391,219.36 = 83,326.97 : x
  2. Step 2: Convert to fraction form
    260,834.69/391,219.36 = 83,326.97/x
  3. Step 3: Cross multiply
    260,834.69x = 391,219.36 × 83,326.97
  4. Step 4: Simplify right side
    260,834.69x = 32,599,123,874.14
  5. Step 5: Solve for x
    x = 32,599,123,874.14/260,834.69
  6. Step 6: Final answer
    x = 124,980.02

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1.5x scale

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.