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Finding the Fourth Proportional to 251,716.60, 378,012.30 and 133,618.60

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Solution

The fourth proportional to 251,716.60, 378,012.30 and 133,618.60 is: 200,660.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,716.60 : 378,012.30 = 133,618.60 : x
  2. Step 2: Convert to fraction form
    251,716.60/378,012.30 = 133,618.60/x
  3. Step 3: Cross multiply
    251,716.60x = 378,012.30 × 133,618.60
  4. Step 4: Simplify right side
    251,716.60x = 50,509,474,308.78
  5. Step 5: Solve for x
    x = 50,509,474,308.78/251,716.60
  6. Step 6: Final answer
    x = 200,660.08

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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.