Finding the Fourth Proportional to 378,906.75, 522,891.36 and 209,140.92
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Solution
The fourth proportional to 378,906.75, 522,891.36 and 209,140.92 is: 288,614.49
Step by Step Solution
- Step 1: Write the proportion equation
378,906.75 : 522,891.36 = 209,140.92 : x - Step 2: Convert to fraction form
378,906.75/522,891.36 = 209,140.92/x - Step 3: Cross multiply
378,906.75x = 522,891.36 × 209,140.92 - Step 4: Simplify right side
378,906.75x = 109,357,980,090.45 - Step 5: Solve for x
x = 109,357,980,090.45/378,906.75 - Step 6: Final answer
x = 288,614.49
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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.