Finding the Fourth Proportional to 225,431.18, 311,019.50 and 129,935.82
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Solution
The fourth proportional to 225,431.18, 311,019.50 and 129,935.82 is: 179,267.90
Step by Step Solution
- Step 1: Write the proportion equation
225,431.18 : 311,019.50 = 129,935.82 : x - Step 2: Convert to fraction form
225,431.18/311,019.50 = 129,935.82/x - Step 3: Cross multiply
225,431.18x = 311,019.50 × 129,935.82 - Step 4: Simplify right side
225,431.18x = 40,412,573,118.81 - Step 5: Solve for x
x = 40,412,573,118.81/225,431.18 - Step 6: Final answer
x = 179,267.90
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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.