Finding the Fourth Proportional to 215,811.40, 323,717.10 and 141,161.80
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Solution
The fourth proportional to 215,811.40, 323,717.10 and 141,161.80 is: 211,742.70
Step by Step Solution
- Step 1: Write the proportion equation
215,811.40 : 323,717.10 = 141,161.80 : x - Step 2: Convert to fraction form
215,811.40/323,717.10 = 141,161.80/x - Step 3: Cross multiply
215,811.40x = 323,717.10 × 141,161.80 - Step 4: Simplify right side
215,811.40x = 45,696,488,526.78 - Step 5: Solve for x
x = 45,696,488,526.78/215,811.40 - Step 6: Final answer
x = 211,742.70
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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.