Finding the Fourth Proportional to 209,124,316.58, 288,589,964.21 and 115,036,442.69
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Solution
The fourth proportional to 209,124,316.58, 288,589,964.21 and 115,036,442.69 is: 158,749,414.80
Step by Step Solution
- Step 1: Write the proportion equation
209,124,316.58 : 288,589,964.21 = 115,036,442.69 : x - Step 2: Convert to fraction form
209,124,316.58/288,589,964.21 = 115,036,442.69/x - Step 3: Cross multiply
209,124,316.58x = 288,589,964.21 × 115,036,442.69 - Step 4: Simplify right side
209,124,316.58x = 33,198,362,876,734,684 - Step 5: Solve for x
x = 33,198,362,876,734,684/209,124,316.58 - Step 6: Final answer
x = 158,749,414.80
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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.