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Finding the Fourth Proportional to 299,544.28, 449,198.87 and 121,987.22

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Solution

The fourth proportional to 299,544.28, 449,198.87 and 121,987.22 is: 182,932.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,544.28 : 449,198.87 = 121,987.22 : x
  2. Step 2: Convert to fraction form
    299,544.28/449,198.87 = 121,987.22/x
  3. Step 3: Cross multiply
    299,544.28x = 449,198.87 × 121,987.22
  4. Step 4: Simplify right side
    299,544.28x = 54,796,518,522.51
  5. Step 5: Solve for x
    x = 54,796,518,522.51/299,544.28
  6. Step 6: Final answer
    x = 182,932.95

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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.