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Finding the Fourth Proportional to 422,399.31, 633,409.57 and 251,701.53

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Solution

The fourth proportional to 422,399.31, 633,409.57 and 251,701.53 is: 377,439.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,399.31 : 633,409.57 = 251,701.53 : x
  2. Step 2: Convert to fraction form
    422,399.31/633,409.57 = 251,701.53/x
  3. Step 3: Cross multiply
    422,399.31x = 633,409.57 × 251,701.53
  4. Step 4: Simplify right side
    422,399.31x = 159,430,155,824.98
  5. Step 5: Solve for x
    x = 159,430,155,824.98/422,399.31
  6. Step 6: Final answer
    x = 377,439.44

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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.