Finding the Fourth Proportional to 212,359.43, 318,317.02 and 79,181.75
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Solution
The fourth proportional to 212,359.43, 318,317.02 and 79,181.75 is: 118,689.80
Step by Step Solution
- Step 1: Write the proportion equation
212,359.43 : 318,317.02 = 79,181.75 : x - Step 2: Convert to fraction form
212,359.43/318,317.02 = 79,181.75/x - Step 3: Cross multiply
212,359.43x = 318,317.02 × 79,181.75 - Step 4: Simplify right side
212,359.43x = 25,204,898,698.39 - Step 5: Solve for x
x = 25,204,898,698.39/212,359.43 - Step 6: Final answer
x = 118,689.80
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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.