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Finding the Fourth Proportional to 260,878.94, 391,493.78 and 92,398.67

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Solution

The fourth proportional to 260,878.94, 391,493.78 and 92,398.67 is: 138,660.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,878.94 : 391,493.78 = 92,398.67 : x
  2. Step 2: Convert to fraction form
    260,878.94/391,493.78 = 92,398.67/x
  3. Step 3: Cross multiply
    260,878.94x = 391,493.78 × 92,398.67
  4. Step 4: Simplify right side
    260,878.94x = 36,173,504,123.28
  5. Step 5: Solve for x
    x = 36,173,504,123.28/260,878.94
  6. Step 6: Final answer
    x = 138,660.12

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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.