Finding the Fourth Proportional to 207,908.40, 311,862.60 and 74,809.20
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Solution
The fourth proportional to 207,908.40, 311,862.60 and 74,809.20 is: 112,213.80
Step by Step Solution
- Step 1: Write the proportion equation
207,908.40 : 311,862.60 = 74,809.20 : x - Step 2: Convert to fraction form
207,908.40/311,862.60 = 74,809.20/x - Step 3: Cross multiply
207,908.40x = 311,862.60 × 74,809.20 - Step 4: Simplify right side
207,908.40x = 23,330,191,615.92 - Step 5: Solve for x
x = 23,330,191,615.92/207,908.40 - Step 6: Final answer
x = 112,213.80
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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.