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Finding the Fourth Proportional to 260,877.50, 391,297.12 and 83,336.84

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Solution

The fourth proportional to 260,877.50, 391,297.12 and 83,336.84 is: 124,999.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,877.50 : 391,297.12 = 83,336.84 : x
  2. Step 2: Convert to fraction form
    260,877.50/391,297.12 = 83,336.84/x
  3. Step 3: Cross multiply
    260,877.50x = 391,297.12 × 83,336.84
  4. Step 4: Simplify right side
    260,877.50x = 32,609,465,481.90
  5. Step 5: Solve for x
    x = 32,609,465,481.90/260,877.50
  6. Step 6: Final answer
    x = 124,999.15

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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.