Finding the Fourth Proportional to 378,172.97, 521,878.79 and 206,090.98
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Solution
The fourth proportional to 378,172.97, 521,878.79 and 206,090.98 is: 284,405.60
Step by Step Solution
- Step 1: Write the proportion equation
378,172.97 : 521,878.79 = 206,090.98 : x - Step 2: Convert to fraction form
378,172.97/521,878.79 = 206,090.98/x - Step 3: Cross multiply
378,172.97x = 521,878.79 × 206,090.98 - Step 4: Simplify right side
378,172.97x = 107,554,511,272.31 - Step 5: Solve for x
x = 107,554,511,272.31/378,172.97 - Step 6: Final answer
x = 284,405.60
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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.