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Finding the Fourth Proportional to 386,550.24, 579,992.22 and 209,182.38

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Solution

The fourth proportional to 386,550.24, 579,992.22 and 209,182.38 is: 313,863.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,550.24 : 579,992.22 = 209,182.38 : x
  2. Step 2: Convert to fraction form
    386,550.24/579,992.22 = 209,182.38/x
  3. Step 3: Cross multiply
    386,550.24x = 579,992.22 × 209,182.38
  4. Step 4: Simplify right side
    386,550.24x = 121,324,152,961.08
  5. Step 5: Solve for x
    x = 121,324,152,961.08/386,550.24
  6. Step 6: Final answer
    x = 313,863.87

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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.