Finding the Fourth Proportional to 221,666,921.92, 305,887,230.79 and 122,541,757.53
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Solution
The fourth proportional to 221,666,921.92, 305,887,230.79 and 122,541,757.53 is: 169,100,371.59
Step by Step Solution
- Step 1: Write the proportion equation
221,666,921.92 : 305,887,230.79 = 122,541,757.53 : x - Step 2: Convert to fraction form
221,666,921.92/305,887,230.79 = 122,541,757.53/x - Step 3: Cross multiply
221,666,921.92x = 305,887,230.79 × 122,541,757.53 - Step 4: Simplify right side
221,666,921.92x = 37,483,958,866,991,336 - Step 5: Solve for x
x = 37,483,958,866,991,336/221,666,921.92 - Step 6: Final answer
x = 169,100,371.59
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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.