Finding the Fourth Proportional to 211,815.25, 292,231.96 and 135,379.08
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Solution
The fourth proportional to 211,815.25, 292,231.96 and 135,379.08 is: 186,776.42
Step by Step Solution
- Step 1: Write the proportion equation
211,815.25 : 292,231.96 = 135,379.08 : x - Step 2: Convert to fraction form
211,815.25/292,231.96 = 135,379.08/x - Step 3: Cross multiply
211,815.25x = 292,231.96 × 135,379.08 - Step 4: Simplify right side
211,815.25x = 39,562,093,891.40 - Step 5: Solve for x
x = 39,562,093,891.40/211,815.25 - Step 6: Final answer
x = 186,776.42
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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.