Home / 259,719.90-389,616.30-82,208.40

Finding the Fourth Proportional to 259,719.90, 389,616.30 and 82,208.40

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Solution

The fourth proportional to 259,719.90, 389,616.30 and 82,208.40 is: 123,324.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,719.90 : 389,616.30 = 82,208.40 : x
  2. Step 2: Convert to fraction form
    259,719.90/389,616.30 = 82,208.40/x
  3. Step 3: Cross multiply
    259,719.90x = 389,616.30 × 82,208.40
  4. Step 4: Simplify right side
    259,719.90x = 32,029,732,636.92
  5. Step 5: Solve for x
    x = 32,029,732,636.92/259,719.90
  6. Step 6: Final answer
    x = 123,324.14

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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.