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Finding the Fourth Proportional to 276,940.74, 415,410.96 and 66,578.62

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Solution

The fourth proportional to 276,940.74, 415,410.96 and 66,578.62 is: 99,867.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,940.74 : 415,410.96 = 66,578.62 : x
  2. Step 2: Convert to fraction form
    276,940.74/415,410.96 = 66,578.62/x
  3. Step 3: Cross multiply
    276,940.74x = 415,410.96 × 66,578.62
  4. Step 4: Simplify right side
    276,940.74x = 27,657,488,449.68
  5. Step 5: Solve for x
    x = 27,657,488,449.68/276,940.74
  6. Step 6: Final answer
    x = 99,867.89

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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.