Finding the Fourth Proportional to 274,325.81, 411,447.13 and 74,661.75
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Solution
The fourth proportional to 274,325.81, 411,447.13 and 74,661.75 is: 111,981.31
Step by Step Solution
- Step 1: Write the proportion equation
274,325.81 : 411,447.13 = 74,661.75 : x - Step 2: Convert to fraction form
274,325.81/411,447.13 = 74,661.75/x - Step 3: Cross multiply
274,325.81x = 411,447.13 × 74,661.75 - Step 4: Simplify right side
274,325.81x = 30,719,362,571.62 - Step 5: Solve for x
x = 30,719,362,571.62/274,325.81 - Step 6: Final answer
x = 111,981.31
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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.