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Finding the Fourth Proportional to 449,568.18, 674,684.10 and 212,910.48

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Solution

The fourth proportional to 449,568.18, 674,684.10 and 212,910.48 is: 319,522.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,568.18 : 674,684.10 = 212,910.48 : x
  2. Step 2: Convert to fraction form
    449,568.18/674,684.10 = 212,910.48/x
  3. Step 3: Cross multiply
    449,568.18x = 674,684.10 × 212,910.48
  4. Step 4: Simplify right side
    449,568.18x = 143,647,315,579.37
  5. Step 5: Solve for x
    x = 143,647,315,579.37/449,568.18
  6. Step 6: Final answer
    x = 319,522.87

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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.