Finding the Fourth Proportional to 212,578.14, 318,912.18 and 70,415.36
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Solution
The fourth proportional to 212,578.14, 318,912.18 and 70,415.36 is: 105,637.94
Step by Step Solution
- Step 1: Write the proportion equation
212,578.14 : 318,912.18 = 70,415.36 : x - Step 2: Convert to fraction form
212,578.14/318,912.18 = 70,415.36/x - Step 3: Cross multiply
212,578.14x = 318,912.18 × 70,415.36 - Step 4: Simplify right side
212,578.14x = 22,456,315,963.08 - Step 5: Solve for x
x = 22,456,315,963.08/212,578.14 - Step 6: Final answer
x = 105,637.94
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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.