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Finding the Fourth Proportional to 305,166.10, 421,150.42 and 169,212.61

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Solution

The fourth proportional to 305,166.10, 421,150.42 and 169,212.61 is: 233,525.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,166.10 : 421,150.42 = 169,212.61 : x
  2. Step 2: Convert to fraction form
    305,166.10/421,150.42 = 169,212.61/x
  3. Step 3: Cross multiply
    305,166.10x = 421,150.42 × 169,212.61
  4. Step 4: Simplify right side
    305,166.10x = 71,263,962,508.75
  5. Step 5: Solve for x
    x = 71,263,962,508.75/305,166.10
  6. Step 6: Final answer
    x = 233,525.16

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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.