Finding the Fourth Proportional to 209,405.68, 288,984.52 and 113,917.52
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Solution
The fourth proportional to 209,405.68, 288,984.52 and 113,917.52 is: 157,208.72
Step by Step Solution
- Step 1: Write the proportion equation
209,405.68 : 288,984.52 = 113,917.52 : x - Step 2: Convert to fraction form
209,405.68/288,984.52 = 113,917.52/x - Step 3: Cross multiply
209,405.68x = 288,984.52 × 113,917.52 - Step 4: Simplify right side
209,405.68x = 32,920,399,836.79 - Step 5: Solve for x
x = 32,920,399,836.79/209,405.68 - Step 6: Final answer
x = 157,208.72
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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.