Finding the Fourth Proportional to 321,713.05, 443,964.53 and 178,473.09
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Solution
The fourth proportional to 321,713.05, 443,964.53 and 178,473.09 is: 246,293.15
Step by Step Solution
- Step 1: Write the proportion equation
321,713.05 : 443,964.53 = 178,473.09 : x - Step 2: Convert to fraction form
321,713.05/443,964.53 = 178,473.09/x - Step 3: Cross multiply
321,713.05x = 443,964.53 × 178,473.09 - Step 4: Simplify right side
321,713.05x = 79,235,720,627.13 - Step 5: Solve for x
x = 79,235,720,627.13/321,713.05 - Step 6: Final answer
x = 246,293.15
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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.