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Finding the Fourth Proportional to 299,381.20, 449,071.80 and 204,902.80

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Solution

The fourth proportional to 299,381.20, 449,071.80 and 204,902.80 is: 307,354.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,381.20 : 449,071.80 = 204,902.80 : x
  2. Step 2: Convert to fraction form
    299,381.20/449,071.80 = 204,902.80/x
  3. Step 3: Cross multiply
    299,381.20x = 449,071.80 × 204,902.80
  4. Step 4: Simplify right side
    299,381.20x = 92,016,069,221.04
  5. Step 5: Solve for x
    x = 92,016,069,221.04/299,381.20
  6. Step 6: Final answer
    x = 307,354.20

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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.