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Finding the Fourth Proportional to 483,516.89, 667,311.51 and 279,617.92

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Solution

The fourth proportional to 483,516.89, 667,311.51 and 279,617.92 is: 385,906.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,516.89 : 667,311.51 = 279,617.92 : x
  2. Step 2: Convert to fraction form
    483,516.89/667,311.51 = 279,617.92/x
  3. Step 3: Cross multiply
    483,516.89x = 667,311.51 × 279,617.92
  4. Step 4: Simplify right side
    483,516.89x = 186,592,259,552.18
  5. Step 5: Solve for x
    x = 186,592,259,552.18/483,516.89
  6. Step 6: Final answer
    x = 385,906.39

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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.