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Finding the Fourth Proportional to 299,664.20, 449,496.30 and 274,003.40

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Solution

The fourth proportional to 299,664.20, 449,496.30 and 274,003.40 is: 411,005.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,664.20 : 449,496.30 = 274,003.40 : x
  2. Step 2: Convert to fraction form
    299,664.20/449,496.30 = 274,003.40/x
  3. Step 3: Cross multiply
    299,664.20x = 449,496.30 × 274,003.40
  4. Step 4: Simplify right side
    299,664.20x = 123,163,514,487.42
  5. Step 5: Solve for x
    x = 123,163,514,487.42/299,664.20
  6. Step 6: Final answer
    x = 411,005.10

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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.