Finding the Fourth Proportional to 252,660,207.20, 378,990,310.80 and 154,449,910.40
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Solution
The fourth proportional to 252,660,207.20, 378,990,310.80 and 154,449,910.40 is: 231,674,865.60
Step by Step Solution
- Step 1: Write the proportion equation
252,660,207.20 : 378,990,310.80 = 154,449,910.40 : x - Step 2: Convert to fraction form
252,660,207.20/378,990,310.80 = 154,449,910.40/x - Step 3: Cross multiply
252,660,207.20x = 378,990,310.80 × 154,449,910.40 - Step 4: Simplify right side
252,660,207.20x = 58,535,019,545,528,160 - Step 5: Solve for x
x = 58,535,019,545,528,160/252,660,207.20 - Step 6: Final answer
x = 231,674,865.60
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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.