Finding the Fourth Proportional to 207,989.70, 311,984.55 and 172,997.70
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Solution
The fourth proportional to 207,989.70, 311,984.55 and 172,997.70 is: 259,496.55
Step by Step Solution
- Step 1: Write the proportion equation
207,989.70 : 311,984.55 = 172,997.70 : x - Step 2: Convert to fraction form
207,989.70/311,984.55 = 172,997.70/x - Step 3: Cross multiply
207,989.70x = 311,984.55 × 172,997.70 - Step 4: Simplify right side
207,989.70x = 53,972,609,585.54 - Step 5: Solve for x
x = 53,972,609,585.54/207,989.70 - Step 6: Final answer
x = 259,496.55
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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.