Finding the Fourth Proportional to 225,403.67, 311,057.07 and 129,916.52
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Solution
The fourth proportional to 225,403.67, 311,057.07 and 129,916.52 is: 179,284.80
Step by Step Solution
- Step 1: Write the proportion equation
225,403.67 : 311,057.07 = 129,916.52 : x - Step 2: Convert to fraction form
225,403.67/311,057.07 = 129,916.52/x - Step 3: Cross multiply
225,403.67x = 311,057.07 × 129,916.52 - Step 4: Simplify right side
225,403.67x = 40,411,451,406.21 - Step 5: Solve for x
x = 40,411,451,406.21/225,403.67 - Step 6: Final answer
x = 179,284.80
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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.