Home / 386,400.24-579,767.22-209,032.11

Finding the Fourth Proportional to 386,400.24, 579,767.22 and 209,032.11

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Solution

The fourth proportional to 386,400.24, 579,767.22 and 209,032.11 is: 313,638.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,400.24 : 579,767.22 = 209,032.11 : x
  2. Step 2: Convert to fraction form
    386,400.24/579,767.22 = 209,032.11/x
  3. Step 3: Cross multiply
    386,400.24x = 579,767.22 × 209,032.11
  4. Step 4: Simplify right side
    386,400.24x = 121,189,965,305.43
  5. Step 5: Solve for x
    x = 121,189,965,305.43/386,400.24
  6. Step 6: Final answer
    x = 313,638.43

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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.