Finding the Fourth Proportional to 287,593.80, 431,390.70 and 147,625.80
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Solution
The fourth proportional to 287,593.80, 431,390.70 and 147,625.80 is: 221,438.70
Step by Step Solution
- Step 1: Write the proportion equation
287,593.80 : 431,390.70 = 147,625.80 : x - Step 2: Convert to fraction form
287,593.80/431,390.70 = 147,625.80/x - Step 3: Cross multiply
287,593.80x = 431,390.70 × 147,625.80 - Step 4: Simplify right side
287,593.80x = 63,684,397,200.06 - Step 5: Solve for x
x = 63,684,397,200.06/287,593.80 - Step 6: Final answer
x = 221,438.70
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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.