Finding the Fourth Proportional to 305,387.97, 421,260.30 and 190,467.09
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Solution
The fourth proportional to 305,387.97, 421,260.30 and 190,467.09 is: 262,735.38
Step by Step Solution
- Step 1: Write the proportion equation
305,387.97 : 421,260.30 = 190,467.09 : x - Step 2: Convert to fraction form
305,387.97/421,260.30 = 190,467.09/x - Step 3: Cross multiply
305,387.97x = 421,260.30 × 190,467.09 - Step 4: Simplify right side
305,387.97x = 80,236,223,473.53 - Step 5: Solve for x
x = 80,236,223,473.53/305,387.97 - Step 6: Final answer
x = 262,735.38
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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.