Finding the Fourth Proportional to 226,031.13, 311,919.66 and 129,233.97
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Solution
The fourth proportional to 226,031.13, 311,919.66 and 129,233.97 is: 178,340.99
Step by Step Solution
- Step 1: Write the proportion equation
226,031.13 : 311,919.66 = 129,233.97 : x - Step 2: Convert to fraction form
226,031.13/311,919.66 = 129,233.97/x - Step 3: Cross multiply
226,031.13x = 311,919.66 × 129,233.97 - Step 4: Simplify right side
226,031.13x = 40,310,615,982.85 - Step 5: Solve for x
x = 40,310,615,982.85/226,031.13 - Step 6: Final answer
x = 178,340.99
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1.5x scale
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.