Home / 386,446.24-579,836.22-209,078.11

Finding the Fourth Proportional to 386,446.24, 579,836.22 and 209,078.11

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Solution

The fourth proportional to 386,446.24, 579,836.22 and 209,078.11 is: 313,707.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,446.24 : 579,836.22 = 209,078.11 : x
  2. Step 2: Convert to fraction form
    386,446.24/579,836.22 = 209,078.11/x
  3. Step 3: Cross multiply
    386,446.24x = 579,836.22 × 209,078.11
  4. Step 4: Simplify right side
    386,446.24x = 121,231,060,987.14
  5. Step 5: Solve for x
    x = 121,231,060,987.14/386,446.24
  6. Step 6: Final answer
    x = 313,707.44

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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.