Finding the Fourth Proportional to 211,860.14, 317,790.77 and 51,936.80
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Solution
The fourth proportional to 211,860.14, 317,790.77 and 51,936.80 is: 77,905.33
Step by Step Solution
- Step 1: Write the proportion equation
211,860.14 : 317,790.77 = 51,936.80 : x - Step 2: Convert to fraction form
211,860.14/317,790.77 = 51,936.80/x - Step 3: Cross multiply
211,860.14x = 317,790.77 × 51,936.80 - Step 4: Simplify right side
211,860.14x = 16,505,033,814.70 - Step 5: Solve for x
x = 16,505,033,814.70/211,860.14 - Step 6: Final answer
x = 77,905.33
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.