Finding the Fourth Proportional to 207,414.20, 310,902.60 and 81,005.60
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Solution
The fourth proportional to 207,414.20, 310,902.60 and 81,005.60 is: 121,422.99
Step by Step Solution
- Step 1: Write the proportion equation
207,414.20 : 310,902.60 = 81,005.60 : x - Step 2: Convert to fraction form
207,414.20/310,902.60 = 81,005.60/x - Step 3: Cross multiply
207,414.20x = 310,902.60 × 81,005.60 - Step 4: Simplify right side
207,414.20x = 25,184,851,654.56 - Step 5: Solve for x
x = 25,184,851,654.56/207,414.20 - Step 6: Final answer
x = 121,422.99
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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.