Finding the Fourth Proportional to 221,012.82, 331,516.80 and 132,291.09
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Solution
The fourth proportional to 221,012.82, 331,516.80 and 132,291.09 is: 198,435.18
Step by Step Solution
- Step 1: Write the proportion equation
221,012.82 : 331,516.80 = 132,291.09 : x - Step 2: Convert to fraction form
221,012.82/331,516.80 = 132,291.09/x - Step 3: Cross multiply
221,012.82x = 331,516.80 × 132,291.09 - Step 4: Simplify right side
221,012.82x = 43,856,718,825.31 - Step 5: Solve for x
x = 43,856,718,825.31/221,012.82 - Step 6: Final answer
x = 198,435.18
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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.