Home / 259,747.30-389,620.95-206,603.20

Finding the Fourth Proportional to 259,747.30, 389,620.95 and 206,603.20

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Solution

The fourth proportional to 259,747.30, 389,620.95 and 206,603.20 is: 309,904.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,747.30 : 389,620.95 = 206,603.20 : x
  2. Step 2: Convert to fraction form
    259,747.30/389,620.95 = 206,603.20/x
  3. Step 3: Cross multiply
    259,747.30x = 389,620.95 × 206,603.20
  4. Step 4: Simplify right side
    259,747.30x = 80,496,935,057.04
  5. Step 5: Solve for x
    x = 80,496,935,057.04/259,747.30
  6. Step 6: Final answer
    x = 309,904.80

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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.