Finding the Fourth Proportional to 393,917.36, 543,857.36 and 321,493.26
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Solution
The fourth proportional to 393,917.36, 543,857.36 and 321,493.26 is: 443,865.88
Step by Step Solution
- Step 1: Write the proportion equation
393,917.36 : 543,857.36 = 321,493.26 : x - Step 2: Convert to fraction form
393,917.36/543,857.36 = 321,493.26/x - Step 3: Cross multiply
393,917.36x = 543,857.36 × 321,493.26 - Step 4: Simplify right side
393,917.36x = 174,846,475,641.39 - Step 5: Solve for x
x = 174,846,475,641.39/393,917.36 - Step 6: Final answer
x = 443,865.88
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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.