Home / 260,049.20-390,111.60-110,289.20

Finding the Fourth Proportional to 260,049.20, 390,111.60 and 110,289.20

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Solution

The fourth proportional to 260,049.20, 390,111.60 and 110,289.20 is: 165,449.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,049.20 : 390,111.60 = 110,289.20 : x
  2. Step 2: Convert to fraction form
    260,049.20/390,111.60 = 110,289.20/x
  3. Step 3: Cross multiply
    260,049.20x = 390,111.60 × 110,289.20
  4. Step 4: Simplify right side
    260,049.20x = 43,025,096,274.72
  5. Step 5: Solve for x
    x = 43,025,096,274.72/260,049.20
  6. Step 6: Final answer
    x = 165,449.83

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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.