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Finding the Fourth Proportional to 251,880.60, 378,258.30 and 133,782.60

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Solution

The fourth proportional to 251,880.60, 378,258.30 and 133,782.60 is: 200,906.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,880.60 : 378,258.30 = 133,782.60 : x
  2. Step 2: Convert to fraction form
    251,880.60/378,258.30 = 133,782.60/x
  3. Step 3: Cross multiply
    251,880.60x = 378,258.30 × 133,782.60
  4. Step 4: Simplify right side
    251,880.60x = 50,604,378,845.58
  5. Step 5: Solve for x
    x = 50,604,378,845.58/251,880.60
  6. Step 6: Final answer
    x = 200,906.22

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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.