Finding the Fourth Proportional to 512,201.20, 768,301.80 and 196,665.70
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Solution
The fourth proportional to 512,201.20, 768,301.80 and 196,665.70 is: 294,998.55
Step by Step Solution
- Step 1: Write the proportion equation
512,201.20 : 768,301.80 = 196,665.70 : x - Step 2: Convert to fraction form
512,201.20/768,301.80 = 196,665.70/x - Step 3: Cross multiply
512,201.20x = 768,301.80 × 196,665.70 - Step 4: Simplify right side
512,201.20x = 151,098,611,308.26 - Step 5: Solve for x
x = 151,098,611,308.26/512,201.20 - Step 6: Final answer
x = 294,998.55
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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.