Finding the Fourth Proportional to 204,485.80, 306,728.70 and 115,912.30
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Solution
The fourth proportional to 204,485.80, 306,728.70 and 115,912.30 is: 173,868.45
Step by Step Solution
- Step 1: Write the proportion equation
204,485.80 : 306,728.70 = 115,912.30 : x - Step 2: Convert to fraction form
204,485.80/306,728.70 = 115,912.30/x - Step 3: Cross multiply
204,485.80x = 306,728.70 × 115,912.30 - Step 4: Simplify right side
204,485.80x = 35,553,629,093.01 - Step 5: Solve for x
x = 35,553,629,093.01/204,485.80 - Step 6: Final answer
x = 173,868.45
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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.