Finding the Fourth Proportional to 209,869,604.27, 289,618,435.64 and 115,787,716.28
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Solution
The fourth proportional to 209,869,604.27, 289,618,435.64 and 115,787,716.28 is: 159,786,155.66
Step by Step Solution
- Step 1: Write the proportion equation
209,869,604.27 : 289,618,435.64 = 115,787,716.28 : x - Step 2: Convert to fraction form
209,869,604.27/289,618,435.64 = 115,787,716.28/x - Step 3: Cross multiply
209,869,604.27x = 289,618,435.64 × 115,787,716.28 - Step 4: Simplify right side
209,869,604.27x = 33,534,257,255,269,204 - Step 5: Solve for x
x = 33,534,257,255,269,204/209,869,604.27 - Step 6: Final answer
x = 159,786,155.66
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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.