Finding the Fourth Proportional to 216,621.58, 324,932.42 and 81,649.09
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Solution
The fourth proportional to 216,621.58, 324,932.42 and 81,649.09 is: 122,473.65
Step by Step Solution
- Step 1: Write the proportion equation
216,621.58 : 324,932.42 = 81,649.09 : x - Step 2: Convert to fraction form
216,621.58/324,932.42 = 81,649.09/x - Step 3: Cross multiply
216,621.58x = 324,932.42 × 81,649.09 - Step 4: Simplify right side
216,621.58x = 26,530,434,727.77 - Step 5: Solve for x
x = 26,530,434,727.77/216,621.58 - Step 6: Final answer
x = 122,473.65
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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.