Finding the Fourth Proportional to 215,922.20, 297,972.62 and 120,428.96
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Solution
The fourth proportional to 215,922.20, 297,972.62 and 120,428.96 is: 166,191.95
Step by Step Solution
- Step 1: Write the proportion equation
215,922.20 : 297,972.62 = 120,428.96 : x - Step 2: Convert to fraction form
215,922.20/297,972.62 = 120,428.96/x - Step 3: Cross multiply
215,922.20x = 297,972.62 × 120,428.96 - Step 4: Simplify right side
215,922.20x = 35,884,530,643.07 - Step 5: Solve for x
x = 35,884,530,643.07/215,922.20 - Step 6: Final answer
x = 166,191.95
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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.