Finding the Fourth Proportional to 209,939.56, 289,705.86 and 114,436.84
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Solution
The fourth proportional to 209,939.56, 289,705.86 and 114,436.84 is: 157,916.99
Step by Step Solution
- Step 1: Write the proportion equation
209,939.56 : 289,705.86 = 114,436.84 : x - Step 2: Convert to fraction form
209,939.56/289,705.86 = 114,436.84/x - Step 3: Cross multiply
209,939.56x = 289,705.86 × 114,436.84 - Step 4: Simplify right side
209,939.56x = 33,153,023,147.88 - Step 5: Solve for x
x = 33,153,023,147.88/209,939.56 - Step 6: Final answer
x = 157,916.99
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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.