Finding the Fourth Proportional to 204,425.80, 306,638.70 and 71,261.80
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Solution
The fourth proportional to 204,425.80, 306,638.70 and 71,261.80 is: 106,892.70
Step by Step Solution
- Step 1: Write the proportion equation
204,425.80 : 306,638.70 = 71,261.80 : x - Step 2: Convert to fraction form
204,425.80/306,638.70 = 71,261.80/x - Step 3: Cross multiply
204,425.80x = 306,638.70 × 71,261.80 - Step 4: Simplify right side
204,425.80x = 21,851,625,711.66 - Step 5: Solve for x
x = 21,851,625,711.66/204,425.80 - Step 6: Final answer
x = 106,892.70
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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.