Finding the Fourth Proportional to 316,361.44, 436,578.81 and 173,121.49
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Solution
The fourth proportional to 316,361.44, 436,578.81 and 173,121.49 is: 238,907.67
Step by Step Solution
- Step 1: Write the proportion equation
316,361.44 : 436,578.81 = 173,121.49 : x - Step 2: Convert to fraction form
316,361.44/436,578.81 = 173,121.49/x - Step 3: Cross multiply
316,361.44x = 436,578.81 × 173,121.49 - Step 4: Simplify right side
316,361.44x = 75,581,174,089.63 - Step 5: Solve for x
x = 75,581,174,089.63/316,361.44 - Step 6: Final answer
x = 238,907.67
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.