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Finding the Fourth Proportional to 260,910.66, 391,402.95 and 83,376.18

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Solution

The fourth proportional to 260,910.66, 391,402.95 and 83,376.18 is: 125,076.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,910.66 : 391,402.95 = 83,376.18 : x
  2. Step 2: Convert to fraction form
    260,910.66/391,402.95 = 83,376.18/x
  3. Step 3: Cross multiply
    260,910.66x = 391,402.95 × 83,376.18
  4. Step 4: Simplify right side
    260,910.66x = 32,633,682,811.73
  5. Step 5: Solve for x
    x = 32,633,682,811.73/260,910.66
  6. Step 6: Final answer
    x = 125,076.08

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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.