Finding the Fourth Proportional to 358,138.70, 494,221.08 and 196,993.74
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Solution
The fourth proportional to 358,138.70, 494,221.08 and 196,993.74 is: 271,845.68
Step by Step Solution
- Step 1: Write the proportion equation
358,138.70 : 494,221.08 = 196,993.74 : x - Step 2: Convert to fraction form
358,138.70/494,221.08 = 196,993.74/x - Step 3: Cross multiply
358,138.70x = 494,221.08 × 196,993.74 - Step 4: Simplify right side
358,138.70x = 97,358,458,936.04 - Step 5: Solve for x
x = 97,358,458,936.04/358,138.70 - Step 6: Final answer
x = 271,845.68
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1.5x scale
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.