Finding the Fourth Proportional to 201,843.40, 302,765.10 and 138,857.80
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Solution
The fourth proportional to 201,843.40, 302,765.10 and 138,857.80 is: 208,286.70
Step by Step Solution
- Step 1: Write the proportion equation
201,843.40 : 302,765.10 = 138,857.80 : x - Step 2: Convert to fraction form
201,843.40/302,765.10 = 138,857.80/x - Step 3: Cross multiply
201,843.40x = 302,765.10 × 138,857.80 - Step 4: Simplify right side
201,843.40x = 42,041,295,702.78 - Step 5: Solve for x
x = 42,041,295,702.78/201,843.40 - Step 6: Final answer
x = 208,286.70
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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.