Finding the Fourth Proportional to 311,231.36, 429,344.15 and 190,161.68
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Solution
The fourth proportional to 311,231.36, 429,344.15 and 190,161.68 is: 262,328.32
Step by Step Solution
- Step 1: Write the proportion equation
311,231.36 : 429,344.15 = 190,161.68 : x - Step 2: Convert to fraction form
311,231.36/429,344.15 = 190,161.68/x - Step 3: Cross multiply
311,231.36x = 429,344.15 × 190,161.68 - Step 4: Simplify right side
311,231.36x = 81,644,801,764.64 - Step 5: Solve for x
x = 81,644,801,764.64/311,231.36 - Step 6: Final answer
x = 262,328.32
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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.