Finding the Fourth Proportional to 220,612.40, 304,343.99 and 129,924.95
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Solution
The fourth proportional to 220,612.40, 304,343.99 and 129,924.95 is: 179,236.88
Step by Step Solution
- Step 1: Write the proportion equation
220,612.40 : 304,343.99 = 129,924.95 : x - Step 2: Convert to fraction form
220,612.40/304,343.99 = 129,924.95/x - Step 3: Cross multiply
220,612.40x = 304,343.99 × 129,924.95 - Step 4: Simplify right side
220,612.40x = 39,541,876,760.28 - Step 5: Solve for x
x = 39,541,876,760.28/220,612.40 - Step 6: Final answer
x = 179,236.88
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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.