Finding the Fourth Proportional to 212,974.63, 319,428.09 and 70,808.08
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Solution
The fourth proportional to 212,974.63, 319,428.09 and 70,808.08 is: 106,200.86
Step by Step Solution
- Step 1: Write the proportion equation
212,974.63 : 319,428.09 = 70,808.08 : x - Step 2: Convert to fraction form
212,974.63/319,428.09 = 70,808.08/x - Step 3: Cross multiply
212,974.63x = 319,428.09 × 70,808.08 - Step 4: Simplify right side
212,974.63x = 22,618,089,750.97 - Step 5: Solve for x
x = 22,618,089,750.97/212,974.63 - Step 6: Final answer
x = 106,200.86
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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.