Finding the Fourth Proportional to 209,884.38, 289,638.63 and 114,391.05
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Solution
The fourth proportional to 209,884.38, 289,638.63 and 114,391.05 is: 157,858.66
Step by Step Solution
- Step 1: Write the proportion equation
209,884.38 : 289,638.63 = 114,391.05 : x - Step 2: Convert to fraction form
209,884.38/289,638.63 = 114,391.05/x - Step 3: Cross multiply
209,884.38x = 289,638.63 × 114,391.05 - Step 4: Simplify right side
209,884.38x = 33,132,067,006.26 - Step 5: Solve for x
x = 33,132,067,006.26/209,884.38 - Step 6: Final answer
x = 157,858.66
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1.5x scale
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.