Finding the Fourth Proportional to 220,082,432.32, 303,716,912.92 and 120,972,355.12
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Solution
The fourth proportional to 220,082,432.32, 303,716,912.92 and 120,972,355.12 is: 166,943,584.99
Step by Step Solution
- Step 1: Write the proportion equation
220,082,432.32 : 303,716,912.92 = 120,972,355.12 : x - Step 2: Convert to fraction form
220,082,432.32/303,716,912.92 = 120,972,355.12/x - Step 3: Cross multiply
220,082,432.32x = 303,716,912.92 × 120,972,355.12 - Step 4: Simplify right side
220,082,432.32x = 36,741,350,245,708,360 - Step 5: Solve for x
x = 36,741,350,245,708,360/220,082,432.32 - Step 6: Final answer
x = 166,943,584.99
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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.