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Finding the Fourth Proportional to 198,660.96, 297,991.44 and 58,420.80

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Solution

The fourth proportional to 198,660.96, 297,991.44 and 58,420.80 is: 87,631.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,660.96 : 297,991.44 = 58,420.80 : x
  2. Step 2: Convert to fraction form
    198,660.96/297,991.44 = 58,420.80/x
  3. Step 3: Cross multiply
    198,660.96x = 297,991.44 × 58,420.80
  4. Step 4: Simplify right side
    198,660.96x = 17,408,898,317.95
  5. Step 5: Solve for x
    x = 17,408,898,317.95/198,660.96
  6. Step 6: Final answer
    x = 87,631.20

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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.