Finding the Fourth Proportional to 216,764.25, 324,922.89 and 90,477.99
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Solution
The fourth proportional to 216,764.25, 324,922.89 and 90,477.99 is: 135,623.69
Step by Step Solution
- Step 1: Write the proportion equation
216,764.25 : 324,922.89 = 90,477.99 : x - Step 2: Convert to fraction form
216,764.25/324,922.89 = 90,477.99/x - Step 3: Cross multiply
216,764.25x = 324,922.89 × 90,477.99 - Step 4: Simplify right side
216,764.25x = 29,398,368,367.58 - Step 5: Solve for x
x = 29,398,368,367.58/216,764.25 - Step 6: Final answer
x = 135,623.69
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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.