Finding the Fourth Proportional to 258,990,406.20, 387,789,463.58 and 197,285,622.08
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Solution
The fourth proportional to 258,990,406.20, 387,789,463.58 and 197,285,622.08 is: 295,398,144.97
Step by Step Solution
- Step 1: Write the proportion equation
258,990,406.20 : 387,789,463.58 = 197,285,622.08 : x - Step 2: Convert to fraction form
258,990,406.20/387,789,463.58 = 197,285,622.08/x - Step 3: Cross multiply
258,990,406.20x = 387,789,463.58 × 197,285,622.08 - Step 4: Simplify right side
258,990,406.20x = 76,505,285,555,524,416 - Step 5: Solve for x
x = 76,505,285,555,524,416/258,990,406.20 - Step 6: Final answer
x = 295,398,144.97
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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.