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Finding the Fourth Proportional to 299,479.20, 449,216.97 and 74,838.48

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Solution

The fourth proportional to 299,479.20, 449,216.97 and 74,838.48 is: 112,257.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,479.20 : 449,216.97 = 74,838.48 : x
  2. Step 2: Convert to fraction form
    299,479.20/449,216.97 = 74,838.48/x
  3. Step 3: Cross multiply
    299,479.20x = 449,216.97 × 74,838.48
  4. Step 4: Simplify right side
    299,479.20x = 33,618,715,225.01
  5. Step 5: Solve for x
    x = 33,618,715,225.01/299,479.20
  6. Step 6: Final answer
    x = 112,257.26

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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.