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Finding the Fourth Proportional to 299,369.40, 449,226.90 and 112,399.80

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Solution

The fourth proportional to 299,369.40, 449,226.90 and 112,399.80 is: 168,664.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,369.40 : 449,226.90 = 112,399.80 : x
  2. Step 2: Convert to fraction form
    299,369.40/449,226.90 = 112,399.80/x
  3. Step 3: Cross multiply
    299,369.40x = 449,226.90 × 112,399.80
  4. Step 4: Simplify right side
    299,369.40x = 50,493,013,714.62
  5. Step 5: Solve for x
    x = 50,493,013,714.62/299,369.40
  6. Step 6: Final answer
    x = 168,664.58

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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.