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Finding the Fourth Proportional to 305,893.38, 422,119.08 and 169,936.74

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Solution

The fourth proportional to 305,893.38, 422,119.08 and 169,936.74 is: 234,505.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,893.38 : 422,119.08 = 169,936.74 : x
  2. Step 2: Convert to fraction form
    305,893.38/422,119.08 = 169,936.74/x
  3. Step 3: Cross multiply
    305,893.38x = 422,119.08 × 169,936.74
  4. Step 4: Simplify right side
    305,893.38x = 71,733,540,347.00
  5. Step 5: Solve for x
    x = 71,733,540,347.00/305,893.38
  6. Step 6: Final answer
    x = 234,505.04

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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.