Finding the Fourth Proportional to 259,611.76, 389,465.70 and 82,163.44
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Solution
The fourth proportional to 259,611.76, 389,465.70 and 82,163.44 is: 123,260.37
Step by Step Solution
- Step 1: Write the proportion equation
259,611.76 : 389,465.70 = 82,163.44 : x - Step 2: Convert to fraction form
259,611.76/389,465.70 = 82,163.44/x - Step 3: Cross multiply
259,611.76x = 389,465.70 × 82,163.44 - Step 4: Simplify right side
259,611.76x = 31,999,841,674.01 - Step 5: Solve for x
x = 31,999,841,674.01/259,611.76 - Step 6: Final answer
x = 123,260.37
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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.