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Finding the Fourth Proportional to 198,898.99, 298,349.29 and 80,572.57

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Solution

The fourth proportional to 198,898.99, 298,349.29 and 80,572.57 is: 120,859.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,898.99 : 298,349.29 = 80,572.57 : x
  2. Step 2: Convert to fraction form
    198,898.99/298,349.29 = 80,572.57/x
  3. Step 3: Cross multiply
    198,898.99x = 298,349.29 × 80,572.57
  4. Step 4: Simplify right side
    198,898.99x = 24,038,769,052.98
  5. Step 5: Solve for x
    x = 24,038,769,052.98/198,898.99
  6. Step 6: Final answer
    x = 120,859.18

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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.