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Finding the Fourth Proportional to 299,997.40, 450,121.16 and 131,638.73

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Solution

The fourth proportional to 299,997.40, 450,121.16 and 131,638.73 is: 197,512.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,997.40 : 450,121.16 = 131,638.73 : x
  2. Step 2: Convert to fraction form
    299,997.40/450,121.16 = 131,638.73/x
  3. Step 3: Cross multiply
    299,997.40x = 450,121.16 × 131,638.73
  4. Step 4: Simplify right side
    299,997.40x = 59,253,377,848.53
  5. Step 5: Solve for x
    x = 59,253,377,848.53/299,997.40
  6. Step 6: Final answer
    x = 197,512.97

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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.