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Finding the Fourth Proportional to 305,817.15, 422,025.17 and 167,998.38

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Solution

The fourth proportional to 305,817.15, 422,025.17 and 167,998.38 is: 231,836.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,817.15 : 422,025.17 = 167,998.38 : x
  2. Step 2: Convert to fraction form
    305,817.15/422,025.17 = 167,998.38/x
  3. Step 3: Cross multiply
    305,817.15x = 422,025.17 × 167,998.38
  4. Step 4: Simplify right side
    305,817.15x = 70,899,544,879.22
  5. Step 5: Solve for x
    x = 70,899,544,879.22/305,817.15
  6. Step 6: Final answer
    x = 231,836.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.