Finding the Fourth Proportional to 378,187.98, 521,899.50 and 206,105.99
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Solution
The fourth proportional to 378,187.98, 521,899.50 and 206,105.99 is: 284,426.31
Step by Step Solution
- Step 1: Write the proportion equation
378,187.98 : 521,899.50 = 206,105.99 : x - Step 2: Convert to fraction form
378,187.98/521,899.50 = 206,105.99/x - Step 3: Cross multiply
378,187.98x = 521,899.50 × 206,105.99 - Step 4: Simplify right side
378,187.98x = 107,566,613,128.01 - Step 5: Solve for x
x = 107,566,613,128.01/378,187.98 - Step 6: Final answer
x = 284,426.31
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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.