Finding the Fourth Proportional to 207,874.10, 311,811.15 and 204,763.70
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Solution
The fourth proportional to 207,874.10, 311,811.15 and 204,763.70 is: 307,145.55
Step by Step Solution
- Step 1: Write the proportion equation
207,874.10 : 311,811.15 = 204,763.70 : x - Step 2: Convert to fraction form
207,874.10/311,811.15 = 204,763.70/x - Step 3: Cross multiply
207,874.10x = 311,811.15 × 204,763.70 - Step 4: Simplify right side
207,874.10x = 63,847,604,775.26 - Step 5: Solve for x
x = 63,847,604,775.26/207,874.10 - Step 6: Final answer
x = 307,145.55
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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.