Home / 260,540.70-390,811.05-110,731.20

Finding the Fourth Proportional to 260,540.70, 390,811.05 and 110,731.20

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Solution

The fourth proportional to 260,540.70, 390,811.05 and 110,731.20 is: 166,096.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,540.70 : 390,811.05 = 110,731.20 : x
  2. Step 2: Convert to fraction form
    260,540.70/390,811.05 = 110,731.20/x
  3. Step 3: Cross multiply
    260,540.70x = 390,811.05 × 110,731.20
  4. Step 4: Simplify right side
    260,540.70x = 43,274,976,539.76
  5. Step 5: Solve for x
    x = 43,274,976,539.76/260,540.70
  6. Step 6: Final answer
    x = 166,096.80

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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.