Finding the Fourth Proportional to 216,286.42, 324,430.39 and 66,525.70
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Solution
The fourth proportional to 216,286.42, 324,430.39 and 66,525.70 is: 99,788.78
Step by Step Solution
- Step 1: Write the proportion equation
216,286.42 : 324,430.39 = 66,525.70 : x - Step 2: Convert to fraction form
216,286.42/324,430.39 = 66,525.70/x - Step 3: Cross multiply
216,286.42x = 324,430.39 × 66,525.70 - Step 4: Simplify right side
216,286.42x = 21,582,958,796.02 - Step 5: Solve for x
x = 21,582,958,796.02/216,286.42 - Step 6: Final answer
x = 99,788.78
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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.