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Finding the Fourth Proportional to 305,998.37, 422,269.35 and 170,028.82

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Solution

The fourth proportional to 305,998.37, 422,269.35 and 170,028.82 is: 234,635.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,998.37 : 422,269.35 = 170,028.82 : x
  2. Step 2: Convert to fraction form
    305,998.37/422,269.35 = 170,028.82/x
  3. Step 3: Cross multiply
    305,998.37x = 422,269.35 × 170,028.82
  4. Step 4: Simplify right side
    305,998.37x = 71,797,960,149.31
  5. Step 5: Solve for x
    x = 71,797,960,149.31/305,998.37
  6. Step 6: Final answer
    x = 234,635.11

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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.