Finding the Fourth Proportional to 220,936.40, 331,459.80 and 71,190.80
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Solution
The fourth proportional to 220,936.40, 331,459.80 and 71,190.80 is: 106,803.99
Step by Step Solution
- Step 1: Write the proportion equation
220,936.40 : 331,459.80 = 71,190.80 : x - Step 2: Convert to fraction form
220,936.40/331,459.80 = 71,190.80/x - Step 3: Cross multiply
220,936.40x = 331,459.80 × 71,190.80 - Step 4: Simplify right side
220,936.40x = 23,596,888,329.84 - Step 5: Solve for x
x = 23,596,888,329.84/220,936.40 - Step 6: Final answer
x = 106,803.99
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1.5x scale
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.