Finding the Fourth Proportional to 212,866.92, 319,343.58 and 79,744.68
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Solution
The fourth proportional to 212,866.92, 319,343.58 and 79,744.68 is: 119,633.20
Step by Step Solution
- Step 1: Write the proportion equation
212,866.92 : 319,343.58 = 79,744.68 : x - Step 2: Convert to fraction form
212,866.92/319,343.58 = 79,744.68/x - Step 3: Cross multiply
212,866.92x = 319,343.58 × 79,744.68 - Step 4: Simplify right side
212,866.92x = 25,465,951,597.15 - Step 5: Solve for x
x = 25,465,951,597.15/212,866.92 - Step 6: Final answer
x = 119,633.20
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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.