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Finding the Fourth Proportional to 312,606, 431,396.46 and 169,367.04

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Solution

The fourth proportional to 312,606, 431,396.46 and 169,367.04 is: 233,726.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,606 : 431,396.46 = 169,367.04 : x
  2. Step 2: Convert to fraction form
    312,606/431,396.46 = 169,367.04/x
  3. Step 3: Cross multiply
    312,606x = 431,396.46 × 169,367.04
  4. Step 4: Simplify right side
    312,606x = 73,064,341,496.68
  5. Step 5: Solve for x
    x = 73,064,341,496.68/312,606
  6. Step 6: Final answer
    x = 233,726.61

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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.