Finding the Fourth Proportional to 208,812.30, 288,161.15 and 113,318.99
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Solution
The fourth proportional to 208,812.30, 288,161.15 and 113,318.99 is: 156,380.29
Step by Step Solution
- Step 1: Write the proportion equation
208,812.30 : 288,161.15 = 113,318.99 : x - Step 2: Convert to fraction form
208,812.30/288,161.15 = 113,318.99/x - Step 3: Cross multiply
208,812.30x = 288,161.15 × 113,318.99 - Step 4: Simplify right side
208,812.30x = 32,654,128,467.84 - Step 5: Solve for x
x = 32,654,128,467.84/208,812.30 - Step 6: Final answer
x = 156,380.29
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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.