Finding the Fourth Proportional to 399,451.26, 551,239.78 and 218,163.27
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Solution
The fourth proportional to 399,451.26, 551,239.78 and 218,163.27 is: 301,063.69
Step by Step Solution
- Step 1: Write the proportion equation
399,451.26 : 551,239.78 = 218,163.27 : x - Step 2: Convert to fraction form
399,451.26/551,239.78 = 218,163.27/x - Step 3: Cross multiply
399,451.26x = 551,239.78 × 218,163.27 - Step 4: Simplify right side
399,451.26x = 120,260,271,868.06 - Step 5: Solve for x
x = 120,260,271,868.06/399,451.26 - Step 6: Final answer
x = 301,063.69
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.