Finding the Fourth Proportional to 209,358.80, 313,577.40 and 126,107.60
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Solution
The fourth proportional to 209,358.80, 313,577.40 and 126,107.60 is: 188,883.84
Step by Step Solution
- Step 1: Write the proportion equation
209,358.80 : 313,577.40 = 126,107.60 : x - Step 2: Convert to fraction form
209,358.80/313,577.40 = 126,107.60/x - Step 3: Cross multiply
209,358.80x = 313,577.40 × 126,107.60 - Step 4: Simplify right side
209,358.80x = 39,544,493,328.24 - Step 5: Solve for x
x = 39,544,493,328.24/209,358.80 - Step 6: Final answer
x = 188,883.84
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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.