Finding the Fourth Proportional to 226,579.88, 312,591.74 and 129,731.98
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Solution
The fourth proportional to 226,579.88, 312,591.74 and 129,731.98 is: 178,979.46
Step by Step Solution
- Step 1: Write the proportion equation
226,579.88 : 312,591.74 = 129,731.98 : x - Step 2: Convert to fraction form
226,579.88/312,591.74 = 129,731.98/x - Step 3: Cross multiply
226,579.88x = 312,591.74 × 129,731.98 - Step 4: Simplify right side
226,579.88x = 40,553,145,361.85 - Step 5: Solve for x
x = 40,553,145,361.85/226,579.88 - Step 6: Final answer
x = 178,979.46
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1.5x scale
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.