Finding the Fourth Proportional to 209,402.15, 288,977.18 and 113,909.09
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Solution
The fourth proportional to 209,402.15, 288,977.18 and 113,909.09 is: 157,195.74
Step by Step Solution
- Step 1: Write the proportion equation
209,402.15 : 288,977.18 = 113,909.09 : x - Step 2: Convert to fraction form
209,402.15/288,977.18 = 113,909.09/x - Step 3: Cross multiply
209,402.15x = 288,977.18 × 113,909.09 - Step 4: Simplify right side
209,402.15x = 32,917,125,590.13 - Step 5: Solve for x
x = 32,917,125,590.13/209,402.15 - Step 6: Final answer
x = 157,195.74
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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.