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Finding the Fourth Proportional to 299,479.80, 449,219.70 and 122,114.10

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Solution

The fourth proportional to 299,479.80, 449,219.70 and 122,114.10 is: 183,171.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,479.80 : 449,219.70 = 122,114.10 : x
  2. Step 2: Convert to fraction form
    299,479.80/449,219.70 = 122,114.10/x
  3. Step 3: Cross multiply
    299,479.80x = 449,219.70 × 122,114.10
  4. Step 4: Simplify right side
    299,479.80x = 54,856,059,367.77
  5. Step 5: Solve for x
    x = 54,856,059,367.77/299,479.80
  6. Step 6: Final answer
    x = 183,171.15

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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.