Finding the Fourth Proportional to 305,232.21, 421,220.43 and 169,286.90
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Solution
The fourth proportional to 305,232.21, 421,220.43 and 169,286.90 is: 233,615.90
Step by Step Solution
- Step 1: Write the proportion equation
305,232.21 : 421,220.43 = 169,286.90 : x - Step 2: Convert to fraction form
305,232.21/421,220.43 = 169,286.90/x - Step 3: Cross multiply
305,232.21x = 421,220.43 × 169,286.90 - Step 4: Simplify right side
305,232.21x = 71,307,098,705.26 - Step 5: Solve for x
x = 71,307,098,705.26/305,232.21 - Step 6: Final answer
x = 233,615.90
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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.