Finding the Fourth Proportional to 220,248.13, 303,916.63 and 129,584.15
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Solution
The fourth proportional to 220,248.13, 303,916.63 and 129,584.15 is: 178,810.95
Step by Step Solution
- Step 1: Write the proportion equation
220,248.13 : 303,916.63 = 129,584.15 : x - Step 2: Convert to fraction form
220,248.13/303,916.63 = 129,584.15/x - Step 3: Cross multiply
220,248.13x = 303,916.63 × 129,584.15 - Step 4: Simplify right side
220,248.13x = 39,382,777,521.49 - Step 5: Solve for x
x = 39,382,777,521.49/220,248.13 - Step 6: Final answer
x = 178,810.95
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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.