Finding the Fourth Proportional to 207,959.70, 311,939.55 and 172,967.70
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Solution
The fourth proportional to 207,959.70, 311,939.55 and 172,967.70 is: 259,451.55
Step by Step Solution
- Step 1: Write the proportion equation
207,959.70 : 311,939.55 = 172,967.70 : x - Step 2: Convert to fraction form
207,959.70/311,939.55 = 172,967.70/x - Step 3: Cross multiply
207,959.70x = 311,939.55 × 172,967.70 - Step 4: Simplify right side
207,959.70x = 53,955,466,502.54 - Step 5: Solve for x
x = 53,955,466,502.54/207,959.70 - Step 6: Final answer
x = 259,451.55
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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.