Finding the Fourth Proportional to 221,912.50, 306,239.26 and 121,310.50
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Solution
The fourth proportional to 221,912.50, 306,239.26 and 121,310.50 is: 167,408.50
Step by Step Solution
- Step 1: Write the proportion equation
221,912.50 : 306,239.26 = 121,310.50 : x - Step 2: Convert to fraction form
221,912.50/306,239.26 = 121,310.50/x - Step 3: Cross multiply
221,912.50x = 306,239.26 × 121,310.50 - Step 4: Simplify right side
221,912.50x = 37,150,037,750.23 - Step 5: Solve for x
x = 37,150,037,750.23/221,912.50 - Step 6: Final answer
x = 167,408.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.