Home / 307,400-424,561.92-206,623.04

Finding the Fourth Proportional to 307,400, 424,561.92 and 206,623.04

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Solution

The fourth proportional to 307,400, 424,561.92 and 206,623.04 is: 285,375.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,400 : 424,561.92 = 206,623.04 : x
  2. Step 2: Convert to fraction form
    307,400/424,561.92 = 206,623.04/x
  3. Step 3: Cross multiply
    307,400x = 424,561.92 × 206,623.04
  4. Step 4: Simplify right side
    307,400x = 87,724,274,578.64
  5. Step 5: Solve for x
    x = 87,724,274,578.64/307,400
  6. Step 6: Final answer
    x = 285,375.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.