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Finding the Fourth Proportional to 399,860.88, 599,822.22 and 133,622.31

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Solution

The fourth proportional to 399,860.88, 599,822.22 and 133,622.31 is: 200,443.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,860.88 : 599,822.22 = 133,622.31 : x
  2. Step 2: Convert to fraction form
    399,860.88/599,822.22 = 133,622.31/x
  3. Step 3: Cross multiply
    399,860.88x = 599,822.22 × 133,622.31
  4. Step 4: Simplify right side
    399,860.88x = 80,149,630,625.73
  5. Step 5: Solve for x
    x = 80,149,630,625.73/399,860.88
  6. Step 6: Final answer
    x = 200,443.79

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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.