Finding the Fourth Proportional to 212,207.16, 318,112.86 and 145,678.62
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Solution
The fourth proportional to 212,207.16, 318,112.86 and 145,678.62 is: 218,382.09
Step by Step Solution
- Step 1: Write the proportion equation
212,207.16 : 318,112.86 = 145,678.62 : x - Step 2: Convert to fraction form
212,207.16/318,112.86 = 145,678.62/x - Step 3: Cross multiply
212,207.16x = 318,112.86 × 145,678.62 - Step 4: Simplify right side
212,207.16x = 46,342,242,449.05 - Step 5: Solve for x
x = 46,342,242,449.05/212,207.16 - Step 6: Final answer
x = 218,382.09
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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.