Finding the Fourth Proportional to 378,169.12, 521,876.96 and 208,409.44
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Solution
The fourth proportional to 378,169.12, 521,876.96 and 208,409.44 is: 287,607.00
Step by Step Solution
- Step 1: Write the proportion equation
378,169.12 : 521,876.96 = 208,409.44 : x - Step 2: Convert to fraction form
378,169.12/521,876.96 = 208,409.44/x - Step 3: Cross multiply
378,169.12x = 521,876.96 × 208,409.44 - Step 4: Simplify right side
378,169.12x = 108,764,084,982.50 - Step 5: Solve for x
x = 108,764,084,982.50/378,169.12 - Step 6: Final answer
x = 287,607.00
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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.