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Finding the Fourth Proportional to 305,556.94, 421,673.07 and 169,599.61

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Solution

The fourth proportional to 305,556.94, 421,673.07 and 169,599.61 is: 234,049.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,556.94 : 421,673.07 = 169,599.61 : x
  2. Step 2: Convert to fraction form
    305,556.94/421,673.07 = 169,599.61/x
  3. Step 3: Cross multiply
    305,556.94x = 421,673.07 × 169,599.61
  4. Step 4: Simplify right side
    305,556.94x = 71,515,588,219.50
  5. Step 5: Solve for x
    x = 71,515,588,219.50/305,556.94
  6. Step 6: Final answer
    x = 234,049.96

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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.