Home / 408,720.21-613,083.75-142,480.23

Finding the Fourth Proportional to 408,720.21, 613,083.75 and 142,480.23

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Solution

The fourth proportional to 408,720.21, 613,083.75 and 142,480.23 is: 213,721.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,720.21 : 613,083.75 = 142,480.23 : x
  2. Step 2: Convert to fraction form
    408,720.21/613,083.75 = 142,480.23/x
  3. Step 3: Cross multiply
    408,720.21x = 613,083.75 × 142,480.23
  4. Step 4: Simplify right side
    408,720.21x = 87,352,313,709.26
  5. Step 5: Solve for x
    x = 87,352,313,709.26/408,720.21
  6. Step 6: Final answer
    x = 213,721.54

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1.5x scale

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.