Finding the Fourth Proportional to 212,816.95, 319,155.97 and 70,624.03
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Solution
The fourth proportional to 212,816.95, 319,155.97 and 70,624.03 is: 105,912.99
Step by Step Solution
- Step 1: Write the proportion equation
212,816.95 : 319,155.97 = 70,624.03 : x - Step 2: Convert to fraction form
212,816.95/319,155.97 = 70,624.03/x - Step 3: Cross multiply
212,816.95x = 319,155.97 × 70,624.03 - Step 4: Simplify right side
212,816.95x = 22,540,080,446.84 - Step 5: Solve for x
x = 22,540,080,446.84/212,816.95 - Step 6: Final answer
x = 105,912.99
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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.