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Finding the Fourth Proportional to 299,916.60, 449,874.90 and 275,422.20

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Solution

The fourth proportional to 299,916.60, 449,874.90 and 275,422.20 is: 413,133.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,916.60 : 449,874.90 = 275,422.20 : x
  2. Step 2: Convert to fraction form
    299,916.60/449,874.90 = 275,422.20/x
  3. Step 3: Cross multiply
    299,916.60x = 449,874.90 × 275,422.20
  4. Step 4: Simplify right side
    299,916.60x = 123,905,534,682.78
  5. Step 5: Solve for x
    x = 123,905,534,682.78/299,916.60
  6. Step 6: Final answer
    x = 413,133.30

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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.