Finding the Fourth Proportional to 378,463.25, 522,291.90 and 206,390.63
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Solution
The fourth proportional to 378,463.25, 522,291.90 and 206,390.63 is: 284,825.95
Step by Step Solution
- Step 1: Write the proportion equation
378,463.25 : 522,291.90 = 206,390.63 : x - Step 2: Convert to fraction form
378,463.25/522,291.90 = 206,390.63/x - Step 3: Cross multiply
378,463.25x = 522,291.90 × 206,390.63 - Step 4: Simplify right side
378,463.25x = 107,796,156,364.59 - Step 5: Solve for x
x = 107,796,156,364.59/378,463.25 - Step 6: Final answer
x = 284,825.95
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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.