Finding the Fourth Proportional to 378,686.54, 522,578.66 and 208,920.62
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Solution
The fourth proportional to 378,686.54, 522,578.66 and 208,920.62 is: 288,305.62
Step by Step Solution
- Step 1: Write the proportion equation
378,686.54 : 522,578.66 = 208,920.62 : x - Step 2: Convert to fraction form
378,686.54/522,578.66 = 208,920.62/x - Step 3: Cross multiply
378,686.54x = 522,578.66 × 208,920.62 - Step 4: Simplify right side
378,686.54x = 109,177,457,645.97 - Step 5: Solve for x
x = 109,177,457,645.97/378,686.54 - Step 6: Final answer
x = 288,305.62
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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.