Finding the Fourth Proportional to 207,912.31, 286,902.49 and 117,239.29
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Solution
The fourth proportional to 207,912.31, 286,902.49 and 117,239.29 is: 161,780.92
Step by Step Solution
- Step 1: Write the proportion equation
207,912.31 : 286,902.49 = 117,239.29 : x - Step 2: Convert to fraction form
207,912.31/286,902.49 = 117,239.29/x - Step 3: Cross multiply
207,912.31x = 286,902.49 × 117,239.29 - Step 4: Simplify right side
207,912.31x = 33,636,244,650.99 - Step 5: Solve for x
x = 33,636,244,650.99/207,912.31 - Step 6: Final answer
x = 161,780.92
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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.