Home / 386,410.24-579,782.22-209,042.20

Finding the Fourth Proportional to 386,410.24, 579,782.22 and 209,042.20

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Solution

The fourth proportional to 386,410.24, 579,782.22 and 209,042.20 is: 313,653.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,410.24 : 579,782.22 = 209,042.20 : x
  2. Step 2: Convert to fraction form
    386,410.24/579,782.22 = 209,042.20/x
  3. Step 3: Cross multiply
    386,410.24x = 579,782.22 × 209,042.20
  4. Step 4: Simplify right side
    386,410.24x = 121,198,950,789.68
  5. Step 5: Solve for x
    x = 121,198,950,789.68/386,410.24
  6. Step 6: Final answer
    x = 313,653.57

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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.