Finding the Fourth Proportional to 305,684.75, 458,379.68 and 128,144.09
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Solution
The fourth proportional to 305,684.75, 458,379.68 and 128,144.09 is: 192,154.33
Step by Step Solution
- Step 1: Write the proportion equation
305,684.75 : 458,379.68 = 128,144.09 : x - Step 2: Convert to fraction form
305,684.75/458,379.68 = 128,144.09/x - Step 3: Cross multiply
305,684.75x = 458,379.68 × 128,144.09 - Step 4: Simplify right side
305,684.75x = 58,738,647,473.32 - Step 5: Solve for x
x = 58,738,647,473.32/305,684.75 - Step 6: Final answer
x = 192,154.33
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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.