Finding the Fourth Proportional to 212,773.26, 318,944.58 and 137,940.94
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Solution
The fourth proportional to 212,773.26, 318,944.58 and 137,940.94 is: 206,771.82
Step by Step Solution
- Step 1: Write the proportion equation
212,773.26 : 318,944.58 = 137,940.94 : x - Step 2: Convert to fraction form
212,773.26/318,944.58 = 137,940.94/x - Step 3: Cross multiply
212,773.26x = 318,944.58 × 137,940.94 - Step 4: Simplify right side
212,773.26x = 43,995,515,173.11 - Step 5: Solve for x
x = 43,995,515,173.11/212,773.26 - Step 6: Final answer
x = 206,771.82
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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.