Finding the Fourth Proportional to 225,640.30, 311,387.64 and 123,658.99
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Solution
The fourth proportional to 225,640.30, 311,387.64 and 123,658.99 is: 170,651.61
Step by Step Solution
- Step 1: Write the proportion equation
225,640.30 : 311,387.64 = 123,658.99 : x - Step 2: Convert to fraction form
225,640.30/311,387.64 = 123,658.99/x - Step 3: Cross multiply
225,640.30x = 311,387.64 × 123,658.99 - Step 4: Simplify right side
225,640.30x = 38,505,881,060.88 - Step 5: Solve for x
x = 38,505,881,060.88/225,640.30 - Step 6: Final answer
x = 170,651.61
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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.