Finding the Fourth Proportional to 252,363,998.70, 378,545,998.05 and 217,726,584.30
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Solution
The fourth proportional to 252,363,998.70, 378,545,998.05 and 217,726,584.30 is: 326,589,876.45
Step by Step Solution
- Step 1: Write the proportion equation
252,363,998.70 : 378,545,998.05 = 217,726,584.30 : x - Step 2: Convert to fraction form
252,363,998.70/378,545,998.05 = 217,726,584.30/x - Step 3: Cross multiply
252,363,998.70x = 378,545,998.05 × 217,726,584.30 - Step 4: Simplify right side
252,363,998.70x = 82,419,527,155,860,960 - Step 5: Solve for x
x = 82,419,527,155,860,960/252,363,998.70 - Step 6: Final answer
x = 326,589,876.45
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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.