Finding the Fourth Proportional to 512,800.40, 769,201.18 and 133,720.80
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Solution
The fourth proportional to 512,800.40, 769,201.18 and 133,720.80 is: 200,581.35
Step by Step Solution
- Step 1: Write the proportion equation
512,800.40 : 769,201.18 = 133,720.80 : x - Step 2: Convert to fraction form
512,800.40/769,201.18 = 133,720.80/x - Step 3: Cross multiply
512,800.40x = 769,201.18 × 133,720.80 - Step 4: Simplify right side
512,800.40x = 102,858,197,150.54 - Step 5: Solve for x
x = 102,858,197,150.54/512,800.40 - Step 6: Final answer
x = 200,581.35
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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.