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Finding the Fourth Proportional to 299,414.90, 449,450.40 and 187,221.80

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Solution

The fourth proportional to 299,414.90, 449,450.40 and 187,221.80 is: 281,037.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,414.90 : 449,450.40 = 187,221.80 : x
  2. Step 2: Convert to fraction form
    299,414.90/449,450.40 = 187,221.80/x
  3. Step 3: Cross multiply
    299,414.90x = 449,450.40 × 187,221.80
  4. Step 4: Simplify right side
    299,414.90x = 84,146,912,898.72
  5. Step 5: Solve for x
    x = 84,146,912,898.72/299,414.90
  6. Step 6: Final answer
    x = 281,037.83

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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.