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Finding the Fourth Proportional to 305,611.03, 421,722.12 and 169,634.27

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Solution

The fourth proportional to 305,611.03, 421,722.12 and 169,634.27 is: 234,083.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,611.03 : 421,722.12 = 169,634.27 : x
  2. Step 2: Convert to fraction form
    305,611.03/421,722.12 = 169,634.27/x
  3. Step 3: Cross multiply
    305,611.03x = 421,722.12 × 169,634.27
  4. Step 4: Simplify right side
    305,611.03x = 71,538,525,659.49
  5. Step 5: Solve for x
    x = 71,538,525,659.49/305,611.03
  6. Step 6: Final answer
    x = 234,083.58

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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.