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Finding the Fourth Proportional to 198,295.77, 297,738.87 and 80,197.77

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Solution

The fourth proportional to 198,295.77, 297,738.87 and 80,197.77 is: 120,416.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,295.77 : 297,738.87 = 80,197.77 : x
  2. Step 2: Convert to fraction form
    198,295.77/297,738.87 = 80,197.77/x
  3. Step 3: Cross multiply
    198,295.77x = 297,738.87 × 80,197.77
  4. Step 4: Simplify right side
    198,295.77x = 23,877,993,416.32
  5. Step 5: Solve for x
    x = 23,877,993,416.32/198,295.77
  6. Step 6: Final answer
    x = 120,416.05

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1.5x scale

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.