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Finding the Fourth Proportional to 305,825.92, 422,025.18 and 169,868.56

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Solution

The fourth proportional to 305,825.92, 422,025.18 and 169,868.56 is: 234,410.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,825.92 : 422,025.18 = 169,868.56 : x
  2. Step 2: Convert to fraction form
    305,825.92/422,025.18 = 169,868.56/x
  3. Step 3: Cross multiply
    305,825.92x = 422,025.18 × 169,868.56
  4. Step 4: Simplify right side
    305,825.92x = 71,688,809,610.34
  5. Step 5: Solve for x
    x = 71,688,809,610.34/305,825.92
  6. Step 6: Final answer
    x = 234,410.51

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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.