Finding the Fourth Proportional to 220,471.19, 304,241.43 and 129,830.97
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Solution
The fourth proportional to 220,471.19, 304,241.43 and 129,830.97 is: 179,161.55
Step by Step Solution
- Step 1: Write the proportion equation
220,471.19 : 304,241.43 = 129,830.97 : x - Step 2: Convert to fraction form
220,471.19/304,241.43 = 129,830.97/x - Step 3: Cross multiply
220,471.19x = 304,241.43 × 129,830.97 - Step 4: Simplify right side
220,471.19x = 39,499,959,971.09 - Step 5: Solve for x
x = 39,499,959,971.09/220,471.19 - Step 6: Final answer
x = 179,161.55
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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.