Finding the Fourth Proportional to 281,647.94, 388,675.67 and 154,328.09
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Solution
The fourth proportional to 281,647.94, 388,675.67 and 154,328.09 is: 212,973.59
Step by Step Solution
- Step 1: Write the proportion equation
281,647.94 : 388,675.67 = 154,328.09 : x - Step 2: Convert to fraction form
281,647.94/388,675.67 = 154,328.09/x - Step 3: Cross multiply
281,647.94x = 388,675.67 × 154,328.09 - Step 4: Simplify right side
281,647.94x = 59,983,571,065.55 - Step 5: Solve for x
x = 59,983,571,065.55/281,647.94 - Step 6: Final answer
x = 212,973.59
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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.