Finding the Fourth Proportional to 236,649.18, 326,589.12 and 129,229.20
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Solution
The fourth proportional to 236,649.18, 326,589.12 and 129,229.20 is: 178,343.53
Step by Step Solution
- Step 1: Write the proportion equation
236,649.18 : 326,589.12 = 129,229.20 : x - Step 2: Convert to fraction form
236,649.18/326,589.12 = 129,229.20/x - Step 3: Cross multiply
236,649.18x = 326,589.12 × 129,229.20 - Step 4: Simplify right side
236,649.18x = 42,204,850,706.30 - Step 5: Solve for x
x = 42,204,850,706.30/236,649.18 - Step 6: Final answer
x = 178,343.53
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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.