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Finding the Fourth Proportional to 260,888.70, 391,508.40 and 92,408.42

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Solution

The fourth proportional to 260,888.70, 391,508.40 and 92,408.42 is: 138,674.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,888.70 : 391,508.40 = 92,408.42 : x
  2. Step 2: Convert to fraction form
    260,888.70/391,508.40 = 92,408.42/x
  3. Step 3: Cross multiply
    260,888.70x = 391,508.40 × 92,408.42
  4. Step 4: Simplify right side
    260,888.70x = 36,178,672,660.73
  5. Step 5: Solve for x
    x = 36,178,672,660.73/260,888.70
  6. Step 6: Final answer
    x = 138,674.74

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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.