Finding the Fourth Proportional to 206,729,906.40, 285,299,979.12 and 113,910,390
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Solution
The fourth proportional to 206,729,906.40, 285,299,979.12 and 113,910,390 is: 157,203,340.60
Step by Step Solution
- Step 1: Write the proportion equation
206,729,906.40 : 285,299,979.12 = 113,910,390 : x - Step 2: Convert to fraction form
206,729,906.40/285,299,979.12 = 113,910,390/x - Step 3: Cross multiply
206,729,906.40x = 285,299,979.12 × 113,910,390 - Step 4: Simplify right side
206,729,906.40x = 32,498,631,888,551,056 - Step 5: Solve for x
x = 32,498,631,888,551,056/206,729,906.40 - Step 6: Final answer
x = 157,203,340.60
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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.