Finding the Fourth Proportional to 263,041,387.80, 394,562,081.70 and 71,565,163.80
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Solution
The fourth proportional to 263,041,387.80, 394,562,081.70 and 71,565,163.80 is: 107,347,745.70
Step by Step Solution
- Step 1: Write the proportion equation
263,041,387.80 : 394,562,081.70 = 71,565,163.80 : x - Step 2: Convert to fraction form
263,041,387.80/394,562,081.70 = 71,565,163.80/x - Step 3: Cross multiply
263,041,387.80x = 394,562,081.70 × 71,565,163.80 - Step 4: Simplify right side
263,041,387.80x = 28,236,900,006,129,480 - Step 5: Solve for x
x = 28,236,900,006,129,480/263,041,387.80 - Step 6: Final answer
x = 107,347,745.70
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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.