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Finding the Fourth Proportional to 198,625.56, 297,844.65 and 72,176.64

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Solution

The fourth proportional to 198,625.56, 297,844.65 and 72,176.64 is: 108,230.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,625.56 : 297,844.65 = 72,176.64 : x
  2. Step 2: Convert to fraction form
    198,625.56/297,844.65 = 72,176.64/x
  3. Step 3: Cross multiply
    198,625.56x = 297,844.65 × 72,176.64
  4. Step 4: Simplify right side
    198,625.56x = 21,497,426,078.98
  5. Step 5: Solve for x
    x = 21,497,426,078.98/198,625.56
  6. Step 6: Final answer
    x = 108,230.91

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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.