Finding the Fourth Proportional to 209,486.36, 289,382.75 and 201,709.17
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Solution
The fourth proportional to 209,486.36, 289,382.75 and 201,709.17 is: 278,639.40
Step by Step Solution
- Step 1: Write the proportion equation
209,486.36 : 289,382.75 = 201,709.17 : x - Step 2: Convert to fraction form
209,486.36/289,382.75 = 201,709.17/x - Step 3: Cross multiply
209,486.36x = 289,382.75 × 201,709.17 - Step 4: Simplify right side
209,486.36x = 58,371,154,314.82 - Step 5: Solve for x
x = 58,371,154,314.82/209,486.36 - Step 6: Final answer
x = 278,639.40
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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.