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Finding the Fourth Proportional to 305,568.94, 421,689.63 and 169,611.64

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Solution

The fourth proportional to 305,568.94, 421,689.63 and 169,611.64 is: 234,066.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,568.94 : 421,689.63 = 169,611.64 : x
  2. Step 2: Convert to fraction form
    305,568.94/421,689.63 = 169,611.64/x
  3. Step 3: Cross multiply
    305,568.94x = 421,689.63 × 169,611.64
  4. Step 4: Simplify right side
    305,568.94x = 71,523,469,715.29
  5. Step 5: Solve for x
    x = 71,523,469,715.29/305,568.94
  6. Step 6: Final answer
    x = 234,066.56

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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.