Finding the Fourth Proportional to 221,599.92, 305,806.68 and 120,997.20
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Solution
The fourth proportional to 221,599.92, 305,806.68 and 120,997.20 is: 166,975.48
Step by Step Solution
- Step 1: Write the proportion equation
221,599.92 : 305,806.68 = 120,997.20 : x - Step 2: Convert to fraction form
221,599.92/305,806.68 = 120,997.20/x - Step 3: Cross multiply
221,599.92x = 305,806.68 × 120,997.20 - Step 4: Simplify right side
221,599.92x = 37,001,752,021.30 - Step 5: Solve for x
x = 37,001,752,021.30/221,599.92 - Step 6: Final answer
x = 166,975.48
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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.