Finding the Fourth Proportional to 318,081.27, 438,776.01 and 201,581.40
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Solution
The fourth proportional to 318,081.27, 438,776.01 and 201,581.40 is: 278,070.70
Step by Step Solution
- Step 1: Write the proportion equation
318,081.27 : 438,776.01 = 201,581.40 : x - Step 2: Convert to fraction form
318,081.27/438,776.01 = 201,581.40/x - Step 3: Cross multiply
318,081.27x = 438,776.01 × 201,581.40 - Step 4: Simplify right side
318,081.27x = 88,449,082,382.21 - Step 5: Solve for x
x = 88,449,082,382.21/318,081.27 - Step 6: Final answer
x = 278,070.70
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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.