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Finding the Fourth Proportional to 260,885.68, 391,503.92 and 92,405.44

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Solution

The fourth proportional to 260,885.68, 391,503.92 and 92,405.44 is: 138,670.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,885.68 : 391,503.92 = 92,405.44 : x
  2. Step 2: Convert to fraction form
    260,885.68/391,503.92 = 92,405.44/x
  3. Step 3: Cross multiply
    260,885.68x = 391,503.92 × 92,405.44
  4. Step 4: Simplify right side
    260,885.68x = 36,177,091,989.32
  5. Step 5: Solve for x
    x = 36,177,091,989.32/260,885.68
  6. Step 6: Final answer
    x = 138,670.29

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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.