Finding the Fourth Proportional to 221,728.59, 305,894.84 and 163,724.31
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Solution
The fourth proportional to 221,728.59, 305,894.84 and 163,724.31 is: 225,872.63
Step by Step Solution
- Step 1: Write the proportion equation
221,728.59 : 305,894.84 = 163,724.31 : x - Step 2: Convert to fraction form
221,728.59/305,894.84 = 163,724.31/x - Step 3: Cross multiply
221,728.59x = 305,894.84 × 163,724.31 - Step 4: Simplify right side
221,728.59x = 50,082,420,792.94 - Step 5: Solve for x
x = 50,082,420,792.94/221,728.59 - Step 6: Final answer
x = 225,872.63
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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.