Finding the Fourth Proportional to 230,576.90, 318,197.84 and 128,608.97
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Solution
The fourth proportional to 230,576.90, 318,197.84 and 128,608.97 is: 177,481.33
Step by Step Solution
- Step 1: Write the proportion equation
230,576.90 : 318,197.84 = 128,608.97 : x - Step 2: Convert to fraction form
230,576.90/318,197.84 = 128,608.97/x - Step 3: Cross multiply
230,576.90x = 318,197.84 × 128,608.97 - Step 4: Simplify right side
230,576.90x = 40,923,094,224.59 - Step 5: Solve for x
x = 40,923,094,224.59/230,576.90 - Step 6: Final answer
x = 177,481.33
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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.