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Finding the Fourth Proportional to 408,858.82, 613,245.09 and 109,369.63

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Solution

The fourth proportional to 408,858.82, 613,245.09 and 109,369.63 is: 164,042.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,858.82 : 613,245.09 = 109,369.63 : x
  2. Step 2: Convert to fraction form
    408,858.82/613,245.09 = 109,369.63/x
  3. Step 3: Cross multiply
    408,858.82x = 613,245.09 × 109,369.63
  4. Step 4: Simplify right side
    408,858.82x = 67,070,388,592.62
  5. Step 5: Solve for x
    x = 67,070,388,592.62/408,858.82
  6. Step 6: Final answer
    x = 164,042.91

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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.