Home / 260,107.43-390,198.30-80,208.05

Finding the Fourth Proportional to 260,107.43, 390,198.30 and 80,208.05

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Solution

The fourth proportional to 260,107.43, 390,198.30 and 80,208.05 is: 120,323.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,107.43 : 390,198.30 = 80,208.05 : x
  2. Step 2: Convert to fraction form
    260,107.43/390,198.30 = 80,208.05/x
  3. Step 3: Cross multiply
    260,107.43x = 390,198.30 × 80,208.05
  4. Step 4: Simplify right side
    260,107.43x = 31,297,042,805.32
  5. Step 5: Solve for x
    x = 31,297,042,805.32/260,107.43
  6. Step 6: Final answer
    x = 120,323.53

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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.