Finding the Fourth Proportional to 221,524.75, 305,704.29 and 136,691.02
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Solution
The fourth proportional to 221,524.75, 305,704.29 and 136,691.02 is: 188,633.69
Step by Step Solution
- Step 1: Write the proportion equation
221,524.75 : 305,704.29 = 136,691.02 : x - Step 2: Convert to fraction form
221,524.75/305,704.29 = 136,691.02/x - Step 3: Cross multiply
221,524.75x = 305,704.29 × 136,691.02 - Step 4: Simplify right side
221,524.75x = 41,787,031,218.48 - Step 5: Solve for x
x = 41,787,031,218.48/221,524.75 - Step 6: Final answer
x = 188,633.69
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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.