Finding the Fourth Proportional to 311,957.80, 467,936.70 and 259,469.80
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Solution
The fourth proportional to 311,957.80, 467,936.70 and 259,469.80 is: 389,204.70
Step by Step Solution
- Step 1: Write the proportion equation
311,957.80 : 467,936.70 = 259,469.80 : x - Step 2: Convert to fraction form
311,957.80/467,936.70 = 259,469.80/x - Step 3: Cross multiply
311,957.80x = 467,936.70 × 259,469.80 - Step 4: Simplify right side
311,957.80x = 121,415,441,961.66 - Step 5: Solve for x
x = 121,415,441,961.66/311,957.80 - Step 6: Final answer
x = 389,204.70
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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.