Finding the Fourth Proportional to 209,557,423.70, 289,204,529.15 and 121,474,161.62
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Solution
The fourth proportional to 209,557,423.70, 289,204,529.15 and 121,474,161.62 is: 167,643,202.96
Step by Step Solution
- Step 1: Write the proportion equation
209,557,423.70 : 289,204,529.15 = 121,474,161.62 : x - Step 2: Convert to fraction form
209,557,423.70/289,204,529.15 = 121,474,161.62/x - Step 3: Cross multiply
209,557,423.70x = 289,204,529.15 × 121,474,161.62 - Step 4: Simplify right side
209,557,423.70x = 35,130,877,713,149,704 - Step 5: Solve for x
x = 35,130,877,713,149,704/209,557,423.70 - Step 6: Final answer
x = 167,643,202.96
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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.