Finding the Fourth Proportional to 421,325.97, 631,860.42 and 221,537.97
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Solution
The fourth proportional to 421,325.97, 631,860.42 and 221,537.97 is: 332,239.37
Step by Step Solution
- Step 1: Write the proportion equation
421,325.97 : 631,860.42 = 221,537.97 : x - Step 2: Convert to fraction form
421,325.97/631,860.42 = 221,537.97/x - Step 3: Cross multiply
421,325.97x = 631,860.42 × 221,537.97 - Step 4: Simplify right side
421,325.97x = 139,981,074,770.15 - Step 5: Solve for x
x = 139,981,074,770.15/421,325.97 - Step 6: Final answer
x = 332,239.37
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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.