Finding the Fourth Proportional to 378,189.80, 521,888.68 and 206,104.26
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Solution
The fourth proportional to 378,189.80, 521,888.68 and 206,104.26 is: 284,416.66
Step by Step Solution
- Step 1: Write the proportion equation
378,189.80 : 521,888.68 = 206,104.26 : x - Step 2: Convert to fraction form
378,189.80/521,888.68 = 206,104.26/x - Step 3: Cross multiply
378,189.80x = 521,888.68 × 206,104.26 - Step 4: Simplify right side
378,189.80x = 107,563,480,193.78 - Step 5: Solve for x
x = 107,563,480,193.78/378,189.80 - Step 6: Final answer
x = 284,416.66
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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.