Finding the Fourth Proportional to 209,173.78, 288,561.22 and 151,686.99
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Solution
The fourth proportional to 209,173.78, 288,561.22 and 151,686.99 is: 209,256.55
Step by Step Solution
- Step 1: Write the proportion equation
209,173.78 : 288,561.22 = 151,686.99 : x - Step 2: Convert to fraction form
209,173.78/288,561.22 = 151,686.99/x - Step 3: Cross multiply
209,173.78x = 288,561.22 × 151,686.99 - Step 4: Simplify right side
209,173.78x = 43,770,982,892.53 - Step 5: Solve for x
x = 43,770,982,892.53/209,173.78 - Step 6: Final answer
x = 209,256.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.