Finding the Fourth Proportional to 216,874.08, 299,286.18 and 121,380.78
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Solution
The fourth proportional to 216,874.08, 299,286.18 and 121,380.78 is: 167,505.45
Step by Step Solution
- Step 1: Write the proportion equation
216,874.08 : 299,286.18 = 121,380.78 : x - Step 2: Convert to fraction form
216,874.08/299,286.18 = 121,380.78/x - Step 3: Cross multiply
216,874.08x = 299,286.18 × 121,380.78 - Step 4: Simplify right side
216,874.08x = 36,327,589,971.62 - Step 5: Solve for x
x = 36,327,589,971.62/216,874.08 - Step 6: Final answer
x = 167,505.45
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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.