Finding the Fourth Proportional to 209,893,049.97, 289,745,287.97 and 135,589,839.09
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Solution
The fourth proportional to 209,893,049.97, 289,745,287.97 and 135,589,839.09 is: 187,173,977.31
Step by Step Solution
- Step 1: Write the proportion equation
209,893,049.97 : 289,745,287.97 = 135,589,839.09 : x - Step 2: Convert to fraction form
209,893,049.97/289,745,287.97 = 135,589,839.09/x - Step 3: Cross multiply
209,893,049.97x = 289,745,287.97 × 135,589,839.09 - Step 4: Simplify right side
209,893,049.97x = 39,286,516,972,938,016 - Step 5: Solve for x
x = 39,286,516,972,938,016/209,893,049.97 - Step 6: Final answer
x = 187,173,977.31
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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.