Finding the Fourth Proportional to 208,356.80, 287,532.09 and 112,863.87
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Solution
The fourth proportional to 208,356.80, 287,532.09 and 112,863.87 is: 155,751.99
Step by Step Solution
- Step 1: Write the proportion equation
208,356.80 : 287,532.09 = 112,863.87 : x - Step 2: Convert to fraction form
208,356.80/287,532.09 = 112,863.87/x - Step 3: Cross multiply
208,356.80x = 287,532.09 × 112,863.87 - Step 4: Simplify right side
208,356.80x = 32,451,984,426.59 - Step 5: Solve for x
x = 32,451,984,426.59/208,356.80 - Step 6: Final answer
x = 155,751.99
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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.