Finding the Fourth Proportional to 378,894.96, 522,879.36 and 209,129.16
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Solution
The fourth proportional to 378,894.96, 522,879.36 and 209,129.16 is: 288,600.62
Step by Step Solution
- Step 1: Write the proportion equation
378,894.96 : 522,879.36 = 209,129.16 : x - Step 2: Convert to fraction form
378,894.96/522,879.36 = 209,129.16/x - Step 3: Cross multiply
378,894.96x = 522,879.36 × 209,129.16 - Step 4: Simplify right side
378,894.96x = 109,349,321,338.14 - Step 5: Solve for x
x = 109,349,321,338.14/378,894.96 - Step 6: Final answer
x = 288,600.62
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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.