Finding the Fourth Proportional to 318,868.26, 440,021.59 and 198,006.95
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Solution
The fourth proportional to 318,868.26, 440,021.59 and 198,006.95 is: 273,239.28
Step by Step Solution
- Step 1: Write the proportion equation
318,868.26 : 440,021.59 = 198,006.95 : x - Step 2: Convert to fraction form
318,868.26/440,021.59 = 198,006.95/x - Step 3: Cross multiply
318,868.26x = 440,021.59 × 198,006.95 - Step 4: Simplify right side
318,868.26x = 87,127,333,575.09 - Step 5: Solve for x
x = 87,127,333,575.09/318,868.26 - Step 6: Final answer
x = 273,239.28
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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.