Finding the Fourth Proportional to 220,579.26, 304,316.91 and 129,879.78
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Solution
The fourth proportional to 220,579.26, 304,316.91 and 129,879.78 is: 179,185.54
Step by Step Solution
- Step 1: Write the proportion equation
220,579.26 : 304,316.91 = 129,879.78 : x - Step 2: Convert to fraction form
220,579.26/304,316.91 = 129,879.78/x - Step 3: Cross multiply
220,579.26x = 304,316.91 × 129,879.78 - Step 4: Simplify right side
220,579.26x = 39,524,613,321.08 - Step 5: Solve for x
x = 39,524,613,321.08/220,579.26 - Step 6: Final answer
x = 179,185.54
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1.5x scale
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.