Finding the Fourth Proportional to 225,427.18, 311,118.29 and 129,934.55
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Solution
The fourth proportional to 225,427.18, 311,118.29 and 129,934.55 is: 179,326.28
Step by Step Solution
- Step 1: Write the proportion equation
225,427.18 : 311,118.29 = 129,934.55 : x - Step 2: Convert to fraction form
225,427.18/311,118.29 = 129,934.55/x - Step 3: Cross multiply
225,427.18x = 311,118.29 × 129,934.55 - Step 4: Simplify right side
225,427.18x = 40,425,016,110.55 - Step 5: Solve for x
x = 40,425,016,110.55/225,427.18 - Step 6: Final answer
x = 179,326.28
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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.