Finding the Fourth Proportional to 212,958.19, 319,343.72 and 79,745.00
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Solution
The fourth proportional to 212,958.19, 319,343.72 and 79,745.00 is: 119,582.46
Step by Step Solution
- Step 1: Write the proportion equation
212,958.19 : 319,343.72 = 79,745.00 : x - Step 2: Convert to fraction form
212,958.19/319,343.72 = 79,745.00/x - Step 3: Cross multiply
212,958.19x = 319,343.72 × 79,745.00 - Step 4: Simplify right side
212,958.19x = 25,466,063,554.04 - Step 5: Solve for x
x = 25,466,063,554.04/212,958.19 - Step 6: Final answer
x = 119,582.46
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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.