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Finding the Fourth Proportional to 198,739.73, 297,420.66 and 190,472.87

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Solution

The fourth proportional to 198,739.73, 297,420.66 and 190,472.87 is: 285,049.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,739.73 : 297,420.66 = 190,472.87 : x
  2. Step 2: Convert to fraction form
    198,739.73/297,420.66 = 190,472.87/x
  3. Step 3: Cross multiply
    198,739.73x = 297,420.66 × 190,472.87
  4. Step 4: Simplify right side
    198,739.73x = 56,650,567,451.05
  5. Step 5: Solve for x
    x = 56,650,567,451.05/198,739.73
  6. Step 6: Final answer
    x = 285,049.03

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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.