Finding the Fourth Proportional to 252,363,994.20, 378,545,991.30 and 217,726,579.80
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Solution
The fourth proportional to 252,363,994.20, 378,545,991.30 and 217,726,579.80 is: 326,589,869.70
Step by Step Solution
- Step 1: Write the proportion equation
252,363,994.20 : 378,545,991.30 = 217,726,579.80 : x - Step 2: Convert to fraction form
252,363,994.20/378,545,991.30 = 217,726,579.80/x - Step 3: Cross multiply
252,363,994.20x = 378,545,991.30 × 217,726,579.80 - Step 4: Simplify right side
252,363,994.20x = 82,419,523,982,749,568 - Step 5: Solve for x
x = 82,419,523,982,749,568/252,363,994.20 - Step 6: Final answer
x = 326,589,869.70
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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.