Finding the Fourth Proportional to 664,138.13, 996,207.19 and 220,906.13
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Solution
The fourth proportional to 664,138.13, 996,207.19 and 220,906.13 is: 331,359.19
Step by Step Solution
- Step 1: Write the proportion equation
664,138.13 : 996,207.19 = 220,906.13 : x - Step 2: Convert to fraction form
664,138.13/996,207.19 = 220,906.13/x - Step 3: Cross multiply
664,138.13x = 996,207.19 × 220,906.13 - Step 4: Simplify right side
664,138.13x = 220,068,275,021.08 - Step 5: Solve for x
x = 220,068,275,021.08/664,138.13 - Step 6: Final answer
x = 331,359.19
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Double scale
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Similar ratio
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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.