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Finding the Fourth Proportional to 408,736.80, 613,208.88 and 268,768.80

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Solution

The fourth proportional to 408,736.80, 613,208.88 and 268,768.80 is: 403,221.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,736.80 : 613,208.88 = 268,768.80 : x
  2. Step 2: Convert to fraction form
    408,736.80/613,208.88 = 268,768.80/x
  3. Step 3: Cross multiply
    408,736.80x = 613,208.88 × 268,768.80
  4. Step 4: Simplify right side
    408,736.80x = 164,811,414,826.94
  5. Step 5: Solve for x
    x = 164,811,414,826.94/408,736.80
  6. Step 6: Final answer
    x = 403,221.38

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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.