Finding the Fourth Proportional to 378,117.67, 521,827.68 and 208,351.80
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Solution
The fourth proportional to 378,117.67, 521,827.68 and 208,351.80 is: 287,539.42
Step by Step Solution
- Step 1: Write the proportion equation
378,117.67 : 521,827.68 = 208,351.80 : x - Step 2: Convert to fraction form
378,117.67/521,827.68 = 208,351.80/x - Step 3: Cross multiply
378,117.67x = 521,827.68 × 208,351.80 - Step 4: Simplify right side
378,117.67x = 108,723,735,376.07 - Step 5: Solve for x
x = 108,723,735,376.07/378,117.67 - Step 6: Final answer
x = 287,539.42
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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.