Finding the Fourth Proportional to 216,575.75, 324,918.99 and 83,420.25
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Solution
The fourth proportional to 216,575.75, 324,918.99 and 83,420.25 is: 125,151.70
Step by Step Solution
- Step 1: Write the proportion equation
216,575.75 : 324,918.99 = 83,420.25 : x - Step 2: Convert to fraction form
216,575.75/324,918.99 = 83,420.25/x - Step 3: Cross multiply
216,575.75x = 324,918.99 × 83,420.25 - Step 4: Simplify right side
216,575.75x = 27,104,823,375.55 - Step 5: Solve for x
x = 27,104,823,375.55/216,575.75 - Step 6: Final answer
x = 125,151.70
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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.