Home / 260,015.20-390,060.60-110,255.20

Finding the Fourth Proportional to 260,015.20, 390,060.60 and 110,255.20

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Solution

The fourth proportional to 260,015.20, 390,060.60 and 110,255.20 is: 165,398.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,015.20 : 390,060.60 = 110,255.20 : x
  2. Step 2: Convert to fraction form
    260,015.20/390,060.60 = 110,255.20/x
  3. Step 3: Cross multiply
    260,015.20x = 390,060.60 × 110,255.20
  4. Step 4: Simplify right side
    260,015.20x = 43,006,209,465.12
  5. Step 5: Solve for x
    x = 43,006,209,465.12/260,015.20
  6. Step 6: Final answer
    x = 165,398.83

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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.