Finding the Fourth Proportional to 378,891.95, 522,868.37 and 209,126.07
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Solution
The fourth proportional to 378,891.95, 522,868.37 and 209,126.07 is: 288,592.59
Step by Step Solution
- Step 1: Write the proportion equation
378,891.95 : 522,868.37 = 209,126.07 : x - Step 2: Convert to fraction form
378,891.95/522,868.37 = 209,126.07/x - Step 3: Cross multiply
378,891.95x = 522,868.37 × 209,126.07 - Step 4: Simplify right side
378,891.95x = 109,345,406,299.78 - Step 5: Solve for x
x = 109,345,406,299.78/378,891.95 - Step 6: Final answer
x = 288,592.59
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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.