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Finding the Fourth Proportional to 494,372.61, 682,252.57 and 279,499.86

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Solution

The fourth proportional to 494,372.61, 682,252.57 and 279,499.86 is: 385,720.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,372.61 : 682,252.57 = 279,499.86 : x
  2. Step 2: Convert to fraction form
    494,372.61/682,252.57 = 279,499.86/x
  3. Step 3: Cross multiply
    494,372.61x = 682,252.57 × 279,499.86
  4. Step 4: Simplify right side
    494,372.61x = 190,689,497,799.64
  5. Step 5: Solve for x
    x = 190,689,497,799.64/494,372.61
  6. Step 6: Final answer
    x = 385,720.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.