Finding the Fourth Proportional to 207,717.20, 310,919.70 and 163,102.40
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Solution
The fourth proportional to 207,717.20, 310,919.70 and 163,102.40 is: 244,138.42
Step by Step Solution
- Step 1: Write the proportion equation
207,717.20 : 310,919.70 = 163,102.40 : x - Step 2: Convert to fraction form
207,717.20/310,919.70 = 163,102.40/x - Step 3: Cross multiply
207,717.20x = 310,919.70 × 163,102.40 - Step 4: Simplify right side
207,717.20x = 50,711,749,277.28 - Step 5: Solve for x
x = 50,711,749,277.28/207,717.20 - Step 6: Final answer
x = 244,138.42
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.