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Finding the Fourth Proportional to 318,696.26, 477,869.66 and 126,375.93

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Solution

The fourth proportional to 318,696.26, 477,869.66 and 126,375.93 is: 189,494.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,696.26 : 477,869.66 = 126,375.93 : x
  2. Step 2: Convert to fraction form
    318,696.26/477,869.66 = 126,375.93/x
  3. Step 3: Cross multiply
    318,696.26x = 477,869.66 × 126,375.93
  4. Step 4: Simplify right side
    318,696.26x = 60,391,222,543.31
  5. Step 5: Solve for x
    x = 60,391,222,543.31/318,696.26
  6. Step 6: Final answer
    x = 189,494.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.