Home / 408,913.27-613,632.35-198,436.39

Finding the Fourth Proportional to 408,913.27, 613,632.35 and 198,436.39

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Solution

The fourth proportional to 408,913.27, 613,632.35 and 198,436.39 is: 297,781.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,913.27 : 613,632.35 = 198,436.39 : x
  2. Step 2: Convert to fraction form
    408,913.27/613,632.35 = 198,436.39/x
  3. Step 3: Cross multiply
    408,913.27x = 613,632.35 × 198,436.39
  4. Step 4: Simplify right side
    408,913.27x = 121,766,987,329.04
  5. Step 5: Solve for x
    x = 121,766,987,329.04/408,913.27
  6. Step 6: Final answer
    x = 297,781.94

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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.