Finding the Fourth Proportional to 209,043.23, 288,320.72 and 144,619.68
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Solution
The fourth proportional to 209,043.23, 288,320.72 and 144,619.68 is: 199,465.20
Step by Step Solution
- Step 1: Write the proportion equation
209,043.23 : 288,320.72 = 144,619.68 : x - Step 2: Convert to fraction form
209,043.23/288,320.72 = 144,619.68/x - Step 3: Cross multiply
209,043.23x = 288,320.72 × 144,619.68 - Step 4: Simplify right side
209,043.23x = 41,696,849,540.67 - Step 5: Solve for x
x = 41,696,849,540.67/209,043.23 - Step 6: Final answer
x = 199,465.20
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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.