Finding the Fourth Proportional to 207,617.80, 311,426.70 and 155,129.80
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Solution
The fourth proportional to 207,617.80, 311,426.70 and 155,129.80 is: 232,694.70
Step by Step Solution
- Step 1: Write the proportion equation
207,617.80 : 311,426.70 = 155,129.80 : x - Step 2: Convert to fraction form
207,617.80/311,426.70 = 155,129.80/x - Step 3: Cross multiply
207,617.80x = 311,426.70 × 155,129.80 - Step 4: Simplify right side
207,617.80x = 48,311,561,685.66 - Step 5: Solve for x
x = 48,311,561,685.66/207,617.80 - Step 6: Final answer
x = 232,694.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.