Finding the Fourth Proportional to 209,197.12, 313,781.28 and 120,385.12
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Solution
The fourth proportional to 209,197.12, 313,781.28 and 120,385.12 is: 180,569.39
Step by Step Solution
- Step 1: Write the proportion equation
209,197.12 : 313,781.28 = 120,385.12 : x - Step 2: Convert to fraction form
209,197.12/313,781.28 = 120,385.12/x - Step 3: Cross multiply
209,197.12x = 313,781.28 × 120,385.12 - Step 4: Simplify right side
209,197.12x = 37,774,597,046.55 - Step 5: Solve for x
x = 37,774,597,046.55/209,197.12 - Step 6: Final answer
x = 180,569.39
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1.5x scale
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.