Finding the Fourth Proportional to 394,297.44, 591,615.66 and 128,139.54
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Solution
The fourth proportional to 394,297.44, 591,615.66 and 128,139.54 is: 192,264.39
Step by Step Solution
- Step 1: Write the proportion equation
394,297.44 : 591,615.66 = 128,139.54 : x - Step 2: Convert to fraction form
394,297.44/591,615.66 = 128,139.54/x - Step 3: Cross multiply
394,297.44x = 591,615.66 × 128,139.54 - Step 4: Simplify right side
394,297.44x = 75,809,358,529.20 - Step 5: Solve for x
x = 75,809,358,529.20/394,297.44 - Step 6: Final answer
x = 192,264.39
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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.