Finding the Fourth Proportional to 378,477.74, 567,713.92 and 138,608.09
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Solution
The fourth proportional to 378,477.74, 567,713.92 and 138,608.09 is: 207,911.15
Step by Step Solution
- Step 1: Write the proportion equation
378,477.74 : 567,713.92 = 138,608.09 : x - Step 2: Convert to fraction form
378,477.74/567,713.92 = 138,608.09/x - Step 3: Cross multiply
378,477.74x = 567,713.92 × 138,608.09 - Step 4: Simplify right side
378,477.74x = 78,689,744,514.73 - Step 5: Solve for x
x = 78,689,744,514.73/378,477.74 - Step 6: Final answer
x = 207,911.15
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.