Finding the Fourth Proportional to 311,491.36, 429,858.10 and 168,251.41
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Solution
The fourth proportional to 311,491.36, 429,858.10 and 168,251.41 is: 232,186.95
Step by Step Solution
- Step 1: Write the proportion equation
311,491.36 : 429,858.10 = 168,251.41 : x - Step 2: Convert to fraction form
311,491.36/429,858.10 = 168,251.41/x - Step 3: Cross multiply
311,491.36x = 429,858.10 × 168,251.41 - Step 4: Simplify right side
311,491.36x = 72,324,229,077.61 - Step 5: Solve for x
x = 72,324,229,077.61/311,491.36 - Step 6: Final answer
x = 232,186.95
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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.