Finding the Fourth Proportional to 220,021.32, 303,604.20 and 123,211.68
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Solution
The fourth proportional to 220,021.32, 303,604.20 and 123,211.68 is: 170,017.99
Step by Step Solution
- Step 1: Write the proportion equation
220,021.32 : 303,604.20 = 123,211.68 : x - Step 2: Convert to fraction form
220,021.32/303,604.20 = 123,211.68/x - Step 3: Cross multiply
220,021.32x = 303,604.20 × 123,211.68 - Step 4: Simplify right side
220,021.32x = 37,407,583,537.06 - Step 5: Solve for x
x = 37,407,583,537.06/220,021.32 - Step 6: Final answer
x = 170,017.99
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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.