Home / 260,811.20-391,119.60-92,266.40

Finding the Fourth Proportional to 260,811.20, 391,119.60 and 92,266.40

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Solution

The fourth proportional to 260,811.20, 391,119.60 and 92,266.40 is: 138,365.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,811.20 : 391,119.60 = 92,266.40 : x
  2. Step 2: Convert to fraction form
    260,811.20/391,119.60 = 92,266.40/x
  3. Step 3: Cross multiply
    260,811.20x = 391,119.60 × 92,266.40
  4. Step 4: Simplify right side
    260,811.20x = 36,087,197,461.44
  5. Step 5: Solve for x
    x = 36,087,197,461.44/260,811.20
  6. Step 6: Final answer
    x = 138,365.21

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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.