Finding the Fourth Proportional to 305,982.66, 422,120.18 and 203,908.68
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Solution
The fourth proportional to 305,982.66, 422,120.18 and 203,908.68 is: 281,303.42
Step by Step Solution
- Step 1: Write the proportion equation
305,982.66 : 422,120.18 = 203,908.68 : x - Step 2: Convert to fraction form
305,982.66/422,120.18 = 203,908.68/x - Step 3: Cross multiply
305,982.66x = 422,120.18 × 203,908.68 - Step 4: Simplify right side
305,982.66x = 86,073,968,705.16 - Step 5: Solve for x
x = 86,073,968,705.16/305,982.66 - Step 6: Final answer
x = 281,303.42
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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.