Finding the Fourth Proportional to 306,075.38, 422,378.25 and 170,107.70
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Solution
The fourth proportional to 306,075.38, 422,378.25 and 170,107.70 is: 234,745.42
Step by Step Solution
- Step 1: Write the proportion equation
306,075.38 : 422,378.25 = 170,107.70 : x - Step 2: Convert to fraction form
306,075.38/422,378.25 = 170,107.70/x - Step 3: Cross multiply
306,075.38x = 422,378.25 × 170,107.70 - Step 4: Simplify right side
306,075.38x = 71,849,792,637.53 - Step 5: Solve for x
x = 71,849,792,637.53/306,075.38 - Step 6: Final answer
x = 234,745.42
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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.