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Finding the Fourth Proportional to 198,305.21, 297,355.75 and 79,944.77

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Solution

The fourth proportional to 198,305.21, 297,355.75 and 79,944.77 is: 119,876.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,305.21 : 297,355.75 = 79,944.77 : x
  2. Step 2: Convert to fraction form
    198,305.21/297,355.75 = 79,944.77/x
  3. Step 3: Cross multiply
    198,305.21x = 297,355.75 × 79,944.77
  4. Step 4: Simplify right side
    198,305.21x = 23,772,036,642.20
  5. Step 5: Solve for x
    x = 23,772,036,642.20/198,305.21
  6. Step 6: Final answer
    x = 119,876.01

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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.