Finding the Fourth Proportional to 270,212.20, 405,340.80 and 80,660.05
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Solution
The fourth proportional to 270,212.20, 405,340.80 and 80,660.05 is: 120,996.79
Step by Step Solution
- Step 1: Write the proportion equation
270,212.20 : 405,340.80 = 80,660.05 : x - Step 2: Convert to fraction form
270,212.20/405,340.80 = 80,660.05/x - Step 3: Cross multiply
270,212.20x = 405,340.80 × 80,660.05 - Step 4: Simplify right side
270,212.20x = 32,694,809,195.04 - Step 5: Solve for x
x = 32,694,809,195.04/270,212.20 - Step 6: Final answer
x = 120,996.79
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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.