Finding the Fourth Proportional to 280,857.80, 421,286.70 and 202,125.80
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Solution
The fourth proportional to 280,857.80, 421,286.70 and 202,125.80 is: 303,188.70
Step by Step Solution
- Step 1: Write the proportion equation
280,857.80 : 421,286.70 = 202,125.80 : x - Step 2: Convert to fraction form
280,857.80/421,286.70 = 202,125.80/x - Step 3: Cross multiply
280,857.80x = 421,286.70 × 202,125.80 - Step 4: Simplify right side
280,857.80x = 85,152,911,266.86 - Step 5: Solve for x
x = 85,152,911,266.86/280,857.80 - Step 6: Final answer
x = 303,188.70
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1.5x scale
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.