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Finding the Fourth Proportional to 412,180.80, 618,213.60 and 131,726.40

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Solution

The fourth proportional to 412,180.80, 618,213.60 and 131,726.40 is: 197,571.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,180.80 : 618,213.60 = 131,726.40 : x
  2. Step 2: Convert to fraction form
    412,180.80/618,213.60 = 131,726.40/x
  3. Step 3: Cross multiply
    412,180.80x = 618,213.60 × 131,726.40
  4. Step 4: Simplify right side
    412,180.80x = 81,435,051,959.04
  5. Step 5: Solve for x
    x = 81,435,051,959.04/412,180.80
  6. Step 6: Final answer
    x = 197,571.19

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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.