Home / 260,083.12-390,138.19-82,604.02

Finding the Fourth Proportional to 260,083.12, 390,138.19 and 82,604.02

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Solution

The fourth proportional to 260,083.12, 390,138.19 and 82,604.02 is: 123,910.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,083.12 : 390,138.19 = 82,604.02 : x
  2. Step 2: Convert to fraction form
    260,083.12/390,138.19 = 82,604.02/x
  3. Step 3: Cross multiply
    260,083.12x = 390,138.19 × 82,604.02
  4. Step 4: Simplify right side
    260,083.12x = 32,226,982,849.52
  5. Step 5: Solve for x
    x = 32,226,982,849.52/260,083.12
  6. Step 6: Final answer
    x = 123,910.32

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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.