Finding the Fourth Proportional to 214,450.80, 321,906.60 and 121,138.80
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Solution
The fourth proportional to 214,450.80, 321,906.60 and 121,138.80 is: 181,838.35
Step by Step Solution
- Step 1: Write the proportion equation
214,450.80 : 321,906.60 = 121,138.80 : x - Step 2: Convert to fraction form
214,450.80/321,906.60 = 121,138.80/x - Step 3: Cross multiply
214,450.80x = 321,906.60 × 121,138.80 - Step 4: Simplify right side
214,450.80x = 38,995,379,236.08 - Step 5: Solve for x
x = 38,995,379,236.08/214,450.80 - Step 6: Final answer
x = 181,838.35
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1.5x scale
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.