Finding the Fourth Proportional to 206,454.40, 284,912.64 and 121,555.84
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Solution
The fourth proportional to 206,454.40, 284,912.64 and 121,555.84 is: 167,750.34
Step by Step Solution
- Step 1: Write the proportion equation
206,454.40 : 284,912.64 = 121,555.84 : x - Step 2: Convert to fraction form
206,454.40/284,912.64 = 121,555.84/x - Step 3: Cross multiply
206,454.40x = 284,912.64 × 121,555.84 - Step 4: Simplify right side
206,454.40x = 34,632,795,281.82 - Step 5: Solve for x
x = 34,632,795,281.82/206,454.40 - Step 6: Final answer
x = 167,750.34
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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.