Finding the Fourth Proportional to 261,187.92, 391,831.05 and 186,121.84
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Solution
The fourth proportional to 261,187.92, 391,831.05 and 186,121.84 is: 279,217.80
Step by Step Solution
- Step 1: Write the proportion equation
261,187.92 : 391,831.05 = 186,121.84 : x - Step 2: Convert to fraction form
261,187.92/391,831.05 = 186,121.84/x - Step 3: Cross multiply
261,187.92x = 391,831.05 × 186,121.84 - Step 4: Simplify right side
261,187.92x = 72,928,315,995.13 - Step 5: Solve for x
x = 72,928,315,995.13/261,187.92 - Step 6: Final answer
x = 279,217.80
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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.