Finding the Fourth Proportional to 378,396.10, 522,190.15 and 208,636.26
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Solution
The fourth proportional to 378,396.10, 522,190.15 and 208,636.26 is: 287,919.99
Step by Step Solution
- Step 1: Write the proportion equation
378,396.10 : 522,190.15 = 208,636.26 : x - Step 2: Convert to fraction form
378,396.10/522,190.15 = 208,636.26/x - Step 3: Cross multiply
378,396.10x = 522,190.15 × 208,636.26 - Step 4: Simplify right side
378,396.10x = 108,947,799,904.84 - Step 5: Solve for x
x = 108,947,799,904.84/378,396.10 - Step 6: Final answer
x = 287,919.99
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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.