Finding the Fourth Proportional to 218,609.09, 327,864.42 and 142,683.74
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Solution
The fourth proportional to 218,609.09, 327,864.42 and 142,683.74 is: 213,993.49
Step by Step Solution
- Step 1: Write the proportion equation
218,609.09 : 327,864.42 = 142,683.74 : x - Step 2: Convert to fraction form
218,609.09/327,864.42 = 142,683.74/x - Step 3: Cross multiply
218,609.09x = 327,864.42 × 142,683.74 - Step 4: Simplify right side
218,609.09x = 46,780,920,019.21 - Step 5: Solve for x
x = 46,780,920,019.21/218,609.09 - Step 6: Final answer
x = 213,993.49
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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.