Finding the Fourth Proportional to 215,843.40, 323,765.10 and 141,193.80
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Solution
The fourth proportional to 215,843.40, 323,765.10 and 141,193.80 is: 211,790.70
Step by Step Solution
- Step 1: Write the proportion equation
215,843.40 : 323,765.10 = 141,193.80 : x - Step 2: Convert to fraction form
215,843.40/323,765.10 = 141,193.80/x - Step 3: Cross multiply
215,843.40x = 323,765.10 × 141,193.80 - Step 4: Simplify right side
215,843.40x = 45,713,624,776.38 - Step 5: Solve for x
x = 45,713,624,776.38/215,843.40 - Step 6: Final answer
x = 211,790.70
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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.