Finding the Fourth Proportional to 207,971.70, 311,957.55 and 172,979.70
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Solution
The fourth proportional to 207,971.70, 311,957.55 and 172,979.70 is: 259,469.55
Step by Step Solution
- Step 1: Write the proportion equation
207,971.70 : 311,957.55 = 172,979.70 : x - Step 2: Convert to fraction form
207,971.70/311,957.55 = 172,979.70/x - Step 3: Cross multiply
207,971.70x = 311,957.55 × 172,979.70 - Step 4: Simplify right side
207,971.70x = 53,962,323,411.74 - Step 5: Solve for x
x = 53,962,323,411.74/207,971.70 - Step 6: Final answer
x = 259,469.55
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1.5x scale
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.