Finding the Fourth Proportional to 220,190.61, 303,863.63 and 129,549.99
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Solution
The fourth proportional to 220,190.61, 303,863.63 and 129,549.99 is: 178,779.33
Step by Step Solution
- Step 1: Write the proportion equation
220,190.61 : 303,863.63 = 129,549.99 : x - Step 2: Convert to fraction form
220,190.61/303,863.63 = 129,549.99/x - Step 3: Cross multiply
220,190.61x = 303,863.63 × 129,549.99 - Step 4: Simplify right side
220,190.61x = 39,365,529,580.11 - Step 5: Solve for x
x = 39,365,529,580.11/220,190.61 - Step 6: Final answer
x = 178,779.33
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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.