Home / 408,727.67-613,195.19-128,247.35

Finding the Fourth Proportional to 408,727.67, 613,195.19 and 128,247.35

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Solution

The fourth proportional to 408,727.67, 613,195.19 and 128,247.35 is: 192,403.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,727.67 : 613,195.19 = 128,247.35 : x
  2. Step 2: Convert to fraction form
    408,727.67/613,195.19 = 128,247.35/x
  3. Step 3: Cross multiply
    408,727.67x = 613,195.19 × 128,247.35
  4. Step 4: Simplify right side
    408,727.67x = 78,640,657,509.01
  5. Step 5: Solve for x
    x = 78,640,657,509.01/408,727.67
  6. Step 6: Final answer
    x = 192,403.56

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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.