Finding the Fourth Proportional to 355,069.62, 489,976.20 and 202,145.09
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Solution
The fourth proportional to 355,069.62, 489,976.20 and 202,145.09 is: 278,948.90
Step by Step Solution
- Step 1: Write the proportion equation
355,069.62 : 489,976.20 = 202,145.09 : x - Step 2: Convert to fraction form
355,069.62/489,976.20 = 202,145.09/x - Step 3: Cross multiply
355,069.62x = 489,976.20 × 202,145.09 - Step 4: Simplify right side
355,069.62x = 99,046,280,596.98 - Step 5: Solve for x
x = 99,046,280,596.98/355,069.62 - Step 6: Final answer
x = 278,948.90
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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.