Finding the Fourth Proportional to 220,212,481.62, 303,912,590.34 and 121,110,690.72
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Solution
The fourth proportional to 220,212,481.62, 303,912,590.34 and 121,110,690.72 is: 167,143,403.79
Step by Step Solution
- Step 1: Write the proportion equation
220,212,481.62 : 303,912,590.34 = 121,110,690.72 : x - Step 2: Convert to fraction form
220,212,481.62/303,912,590.34 = 121,110,690.72/x - Step 3: Cross multiply
220,212,481.62x = 303,912,590.34 × 121,110,690.72 - Step 4: Simplify right side
220,212,481.62x = 36,807,063,734,581,800 - Step 5: Solve for x
x = 36,807,063,734,581,800/220,212,481.62 - Step 6: Final answer
x = 167,143,403.79
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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.