Finding the Fourth Proportional to 311,728.14, 430,181.82 and 173,908.26
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Solution
The fourth proportional to 311,728.14, 430,181.82 and 173,908.26 is: 239,991.72
Step by Step Solution
- Step 1: Write the proportion equation
311,728.14 : 430,181.82 = 173,908.26 : x - Step 2: Convert to fraction form
311,728.14/430,181.82 = 173,908.26/x - Step 3: Cross multiply
311,728.14x = 430,181.82 × 173,908.26 - Step 4: Simplify right side
311,728.14x = 74,812,171,799.83 - Step 5: Solve for x
x = 74,812,171,799.83/311,728.14 - Step 6: Final answer
x = 239,991.72
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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.