Finding the Fourth Proportional to 208,812.38, 288,161.28 and 113,319.09
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Solution
The fourth proportional to 208,812.38, 288,161.28 and 113,319.09 is: 156,380.45
Step by Step Solution
- Step 1: Write the proportion equation
208,812.38 : 288,161.28 = 113,319.09 : x - Step 2: Convert to fraction form
208,812.38/288,161.28 = 113,319.09/x - Step 3: Cross multiply
208,812.38x = 288,161.28 × 113,319.09 - Step 4: Simplify right side
208,812.38x = 32,654,174,022.84 - Step 5: Solve for x
x = 32,654,174,022.84/208,812.38 - Step 6: Final answer
x = 156,380.45
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.