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Finding the Fourth Proportional to 305,525.85, 421,625.10 and 169,561.41

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Solution

The fourth proportional to 305,525.85, 421,625.10 and 169,561.41 is: 233,994.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,525.85 : 421,625.10 = 169,561.41 : x
  2. Step 2: Convert to fraction form
    305,525.85/421,625.10 = 169,561.41/x
  3. Step 3: Cross multiply
    305,525.85x = 421,625.10 × 169,561.41
  4. Step 4: Simplify right side
    305,525.85x = 71,491,346,447.39
  5. Step 5: Solve for x
    x = 71,491,346,447.39/305,525.85
  6. Step 6: Final answer
    x = 233,994.43

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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.