Finding the Fourth Proportional to 263,686,473.99, 395,491,208.60 and 76,890,220.79
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Solution
The fourth proportional to 263,686,473.99, 395,491,208.60 and 76,890,220.79 is: 115,324,103.99
Step by Step Solution
- Step 1: Write the proportion equation
263,686,473.99 : 395,491,208.60 = 76,890,220.79 : x - Step 2: Convert to fraction form
263,686,473.99/395,491,208.60 = 76,890,220.79/x - Step 3: Cross multiply
263,686,473.99x = 395,491,208.60 × 76,890,220.79 - Step 4: Simplify right side
263,686,473.99x = 30,409,406,347,972,716 - Step 5: Solve for x
x = 30,409,406,347,972,716/263,686,473.99 - Step 6: Final answer
x = 115,324,103.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.