Finding the Fourth Proportional to 278,645.37, 384,530.55 and 157,786.62
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Solution
The fourth proportional to 278,645.37, 384,530.55 and 157,786.62 is: 217,745.50
Step by Step Solution
- Step 1: Write the proportion equation
278,645.37 : 384,530.55 = 157,786.62 : x - Step 2: Convert to fraction form
278,645.37/384,530.55 = 157,786.62/x - Step 3: Cross multiply
278,645.37x = 384,530.55 × 157,786.62 - Step 4: Simplify right side
278,645.37x = 60,673,775,771.24 - Step 5: Solve for x
x = 60,673,775,771.24/278,645.37 - Step 6: Final answer
x = 217,745.50
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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.