Home / 387,190.91-579,542.79-206,825.33

Finding the Fourth Proportional to 387,190.91, 579,542.79 and 206,825.33

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Solution

The fourth proportional to 387,190.91, 579,542.79 and 206,825.33 is: 309,573.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,190.91 : 579,542.79 = 206,825.33 : x
  2. Step 2: Convert to fraction form
    387,190.91/579,542.79 = 206,825.33/x
  3. Step 3: Cross multiply
    387,190.91x = 579,542.79 × 206,825.33
  4. Step 4: Simplify right side
    387,190.91x = 119,864,128,790.87
  5. Step 5: Solve for x
    x = 119,864,128,790.87/387,190.91
  6. Step 6: Final answer
    x = 309,573.72

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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.