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Finding the Fourth Proportional to 408,791.60, 613,187.40 and 251,327.60

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Solution

The fourth proportional to 408,791.60, 613,187.40 and 251,327.60 is: 376,991.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,791.60 : 613,187.40 = 251,327.60 : x
  2. Step 2: Convert to fraction form
    408,791.60/613,187.40 = 251,327.60/x
  3. Step 3: Cross multiply
    408,791.60x = 613,187.40 × 251,327.60
  4. Step 4: Simplify right side
    408,791.60x = 154,110,917,592.24
  5. Step 5: Solve for x
    x = 154,110,917,592.24/408,791.60
  6. Step 6: Final answer
    x = 376,991.40

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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.