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Finding the Fourth Proportional to 299,499.60, 449,249.40 and 275,005.20

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Solution

The fourth proportional to 299,499.60, 449,249.40 and 275,005.20 is: 412,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,499.60 : 449,249.40 = 275,005.20 : x
  2. Step 2: Convert to fraction form
    299,499.60/449,249.40 = 275,005.20/x
  3. Step 3: Cross multiply
    299,499.60x = 449,249.40 × 275,005.20
  4. Step 4: Simplify right side
    299,499.60x = 123,545,921,096.88
  5. Step 5: Solve for x
    x = 123,545,921,096.88/299,499.60
  6. Step 6: Final answer
    x = 412,507.80

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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.