Finding the Fourth Proportional to 211,542.12, 317,309.08 and 51,619.09
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Solution
The fourth proportional to 211,542.12, 317,309.08 and 51,619.09 is: 77,427.64
Step by Step Solution
- Step 1: Write the proportion equation
211,542.12 : 317,309.08 = 51,619.09 : x - Step 2: Convert to fraction form
211,542.12/317,309.08 = 51,619.09/x - Step 3: Cross multiply
211,542.12x = 317,309.08 × 51,619.09 - Step 4: Simplify right side
211,542.12x = 16,379,206,751.61 - Step 5: Solve for x
x = 16,379,206,751.61/211,542.12 - Step 6: Final answer
x = 77,427.64
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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.