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Finding the Fourth Proportional to 305,808.86, 422,021.45 and 167,993.60

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Solution

The fourth proportional to 305,808.86, 422,021.45 and 167,993.60 is: 231,834.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,808.86 : 422,021.45 = 167,993.60 : x
  2. Step 2: Convert to fraction form
    305,808.86/422,021.45 = 167,993.60/x
  3. Step 3: Cross multiply
    305,808.86x = 422,021.45 × 167,993.60
  4. Step 4: Simplify right side
    305,808.86x = 70,896,902,662.72
  5. Step 5: Solve for x
    x = 70,896,902,662.72/305,808.86
  6. Step 6: Final answer
    x = 231,834.04

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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.