Finding the Fourth Proportional to 211,815.92, 317,626.99 and 126,465.52
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Solution
The fourth proportional to 211,815.92, 317,626.99 and 126,465.52 is: 189,640.43
Step by Step Solution
- Step 1: Write the proportion equation
211,815.92 : 317,626.99 = 126,465.52 : x - Step 2: Convert to fraction form
211,815.92/317,626.99 = 126,465.52/x - Step 3: Cross multiply
211,815.92x = 317,626.99 × 126,465.52 - Step 4: Simplify right side
211,815.92x = 40,168,862,456.38 - Step 5: Solve for x
x = 40,168,862,456.38/211,815.92 - Step 6: Final answer
x = 189,640.43
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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.