Finding the Fourth Proportional to 259,728.07, 389,831.58 and 131,734.19
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Solution
The fourth proportional to 259,728.07, 389,831.58 and 131,734.19 is: 197,722.75
Step by Step Solution
- Step 1: Write the proportion equation
259,728.07 : 389,831.58 = 131,734.19 : x - Step 2: Convert to fraction form
259,728.07/389,831.58 = 131,734.19/x - Step 3: Cross multiply
259,728.07x = 389,831.58 × 131,734.19 - Step 4: Simplify right side
259,728.07x = 51,354,147,427.72 - Step 5: Solve for x
x = 51,354,147,427.72/259,728.07 - Step 6: Final answer
x = 197,722.75
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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.