Finding the Fourth Proportional to 213,493.16, 294,578.70 and 128,614.88
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Solution
The fourth proportional to 213,493.16, 294,578.70 and 128,614.88 is: 177,463.32
Step by Step Solution
- Step 1: Write the proportion equation
213,493.16 : 294,578.70 = 128,614.88 : x - Step 2: Convert to fraction form
213,493.16/294,578.70 = 128,614.88/x - Step 3: Cross multiply
213,493.16x = 294,578.70 × 128,614.88 - Step 4: Simplify right side
213,493.16x = 37,887,204,151.06 - Step 5: Solve for x
x = 37,887,204,151.06/213,493.16 - Step 6: Final answer
x = 177,463.32
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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.