Finding the Fourth Proportional to 318,120.75, 439,073.43 and 201,758.70
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Solution
The fourth proportional to 318,120.75, 439,073.43 and 201,758.70 is: 278,469.37
Step by Step Solution
- Step 1: Write the proportion equation
318,120.75 : 439,073.43 = 201,758.70 : x - Step 2: Convert to fraction form
318,120.75/439,073.43 = 201,758.70/x - Step 3: Cross multiply
318,120.75x = 439,073.43 × 201,758.70 - Step 4: Simplify right side
318,120.75x = 88,586,884,441.34 - Step 5: Solve for x
x = 88,586,884,441.34/318,120.75 - Step 6: Final answer
x = 278,469.37
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1.5x scale
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.