Finding the Fourth Proportional to 207,846.36, 311,644.56 and 81,335.70
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Solution
The fourth proportional to 207,846.36, 311,644.56 and 81,335.70 is: 121,954.64
Step by Step Solution
- Step 1: Write the proportion equation
207,846.36 : 311,644.56 = 81,335.70 : x - Step 2: Convert to fraction form
207,846.36/311,644.56 = 81,335.70/x - Step 3: Cross multiply
207,846.36x = 311,644.56 × 81,335.70 - Step 4: Simplify right side
207,846.36x = 25,347,828,438.79 - Step 5: Solve for x
x = 25,347,828,438.79/207,846.36 - Step 6: Final answer
x = 121,954.64
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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.