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Finding the Fourth Proportional to 305,886.44, 422,190.72 and 169,967

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Solution

The fourth proportional to 305,886.44, 422,190.72 and 169,967 is: 234,591.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,886.44 : 422,190.72 = 169,967 : x
  2. Step 2: Convert to fraction form
    305,886.44/422,190.72 = 169,967/x
  3. Step 3: Cross multiply
    305,886.44x = 422,190.72 × 169,967
  4. Step 4: Simplify right side
    305,886.44x = 71,758,490,106.24
  5. Step 5: Solve for x
    x = 71,758,490,106.24/305,886.44
  6. Step 6: Final answer
    x = 234,591.93

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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.