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Finding the Fourth Proportional to 412,150.80, 617,880.60 and 215,158.80

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Solution

The fourth proportional to 412,150.80, 617,880.60 and 215,158.80 is: 322,557.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,150.80 : 617,880.60 = 215,158.80 : x
  2. Step 2: Convert to fraction form
    412,150.80/617,880.60 = 215,158.80/x
  3. Step 3: Cross multiply
    412,150.80x = 617,880.60 × 215,158.80
  4. Step 4: Simplify right side
    412,150.80x = 132,942,448,439.28
  5. Step 5: Solve for x
    x = 132,942,448,439.28/412,150.80
  6. Step 6: Final answer
    x = 322,557.78

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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.