Home / 274,021.87-408,143.31-261,727.11

Finding the Fourth Proportional to 274,021.87, 408,143.31 and 261,727.11

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Solution

The fourth proportional to 274,021.87, 408,143.31 and 261,727.11 is: 389,830.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,021.87 : 408,143.31 = 261,727.11 : x
  2. Step 2: Convert to fraction form
    274,021.87/408,143.31 = 261,727.11/x
  3. Step 3: Cross multiply
    274,021.87x = 408,143.31 × 261,727.11
  4. Step 4: Simplify right side
    274,021.87x = 106,822,167,658.07
  5. Step 5: Solve for x
    x = 106,822,167,658.07/274,021.87
  6. Step 6: Final answer
    x = 389,830.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.