Finding the Fourth Proportional to 309,091.14, 426,571.80 and 173,122.62
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Solution
The fourth proportional to 309,091.14, 426,571.80 and 173,122.62 is: 238,923.79
Step by Step Solution
- Step 1: Write the proportion equation
309,091.14 : 426,571.80 = 173,122.62 : x - Step 2: Convert to fraction form
309,091.14/426,571.80 = 173,122.62/x - Step 3: Cross multiply
309,091.14x = 426,571.80 × 173,122.62 - Step 4: Simplify right side
309,091.14x = 73,849,227,634.12 - Step 5: Solve for x
x = 73,849,227,634.12/309,091.14 - Step 6: Final answer
x = 238,923.79
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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.