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Finding the Fourth Proportional to 399,689.73, 599,949.86 and 267,493.77

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Solution

The fourth proportional to 399,689.73, 599,949.86 and 267,493.77 is: 401,518.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,689.73 : 599,949.86 = 267,493.77 : x
  2. Step 2: Convert to fraction form
    399,689.73/599,949.86 = 267,493.77/x
  3. Step 3: Cross multiply
    399,689.73x = 599,949.86 × 267,493.77
  4. Step 4: Simplify right side
    399,689.73x = 160,482,848,524.90
  5. Step 5: Solve for x
    x = 160,482,848,524.90/399,689.73
  6. Step 6: Final answer
    x = 401,518.57

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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.