Finding the Fourth Proportional to 209,173.58, 288,661.77 and 113,680.28
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Solution
The fourth proportional to 209,173.58, 288,661.77 and 113,680.28 is: 156,879.99
Step by Step Solution
- Step 1: Write the proportion equation
209,173.58 : 288,661.77 = 113,680.28 : x - Step 2: Convert to fraction form
209,173.58/288,661.77 = 113,680.28/x - Step 3: Cross multiply
209,173.58x = 288,661.77 × 113,680.28 - Step 4: Simplify right side
209,173.58x = 32,815,149,395.59 - Step 5: Solve for x
x = 32,815,149,395.59/209,173.58 - Step 6: Final answer
x = 156,879.99
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1.5x scale
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.