Finding the Fourth Proportional to 208,138.40, 312,207.60 and 151,713.80
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Solution
The fourth proportional to 208,138.40, 312,207.60 and 151,713.80 is: 227,570.70
Step by Step Solution
- Step 1: Write the proportion equation
208,138.40 : 312,207.60 = 151,713.80 : x - Step 2: Convert to fraction form
208,138.40/312,207.60 = 151,713.80/x - Step 3: Cross multiply
208,138.40x = 312,207.60 × 151,713.80 - Step 4: Simplify right side
208,138.40x = 47,366,201,384.88 - Step 5: Solve for x
x = 47,366,201,384.88/208,138.40 - Step 6: Final answer
x = 227,570.70
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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.