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Finding the Fourth Proportional to 305,900.94, 422,128.23 and 169,943.58

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Solution

The fourth proportional to 305,900.94, 422,128.23 and 169,943.58 is: 234,513.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,900.94 : 422,128.23 = 169,943.58 : x
  2. Step 2: Convert to fraction form
    305,900.94/422,128.23 = 169,943.58/x
  3. Step 3: Cross multiply
    305,900.94x = 422,128.23 × 169,943.58
  4. Step 4: Simplify right side
    305,900.94x = 71,737,982,625.26
  5. Step 5: Solve for x
    x = 71,737,982,625.26/305,900.94
  6. Step 6: Final answer
    x = 234,513.77

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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.