Finding the Fourth Proportional to 419,718.80, 629,764.10 and 219,991.70
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Solution
The fourth proportional to 419,718.80, 629,764.10 and 219,991.70 is: 330,084.98
Step by Step Solution
- Step 1: Write the proportion equation
419,718.80 : 629,764.10 = 219,991.70 : x - Step 2: Convert to fraction form
419,718.80/629,764.10 = 219,991.70/x - Step 3: Cross multiply
419,718.80x = 629,764.10 × 219,991.70 - Step 4: Simplify right side
419,718.80x = 138,542,870,709.19 - Step 5: Solve for x
x = 138,542,870,709.19/419,718.80 - Step 6: Final answer
x = 330,084.98
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.