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Finding the Fourth Proportional to 305,203.41, 421,141.68 and 169,236.41

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Solution

The fourth proportional to 305,203.41, 421,141.68 and 169,236.41 is: 233,524.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,203.41 : 421,141.68 = 169,236.41 : x
  2. Step 2: Convert to fraction form
    305,203.41/421,141.68 = 169,236.41/x
  3. Step 3: Cross multiply
    305,203.41x = 421,141.68 × 169,236.41
  4. Step 4: Simplify right side
    305,203.41x = 71,272,503,918.86
  5. Step 5: Solve for x
    x = 71,272,503,918.86/305,203.41
  6. Step 6: Final answer
    x = 233,524.60

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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.