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Finding the Fourth Proportional to 260,877, 391,296.36 and 83,336.34

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Solution

The fourth proportional to 260,877, 391,296.36 and 83,336.34 is: 124,998.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,877 : 391,296.36 = 83,336.34 : x
  2. Step 2: Convert to fraction form
    260,877/391,296.36 = 83,336.34/x
  3. Step 3: Cross multiply
    260,877x = 391,296.36 × 83,336.34
  4. Step 4: Simplify right side
    260,877x = 32,609,206,497.72
  5. Step 5: Solve for x
    x = 32,609,206,497.72/260,877
  6. Step 6: Final answer
    x = 124,998.40

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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.