Finding the Fourth Proportional to 378,998.57, 568,307.68 and 126,190.01
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Solution
The fourth proportional to 378,998.57, 568,307.68 and 126,190.01 is: 189,221.70
Step by Step Solution
- Step 1: Write the proportion equation
378,998.57 : 568,307.68 = 126,190.01 : x - Step 2: Convert to fraction form
378,998.57/568,307.68 = 126,190.01/x - Step 3: Cross multiply
378,998.57x = 568,307.68 × 126,190.01 - Step 4: Simplify right side
378,998.57x = 71,714,751,822.28 - Step 5: Solve for x
x = 71,714,751,822.28/378,998.57 - Step 6: Final answer
x = 189,221.70
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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.