Finding the Fourth Proportional to 428,497.36, 642,544.56 and 158,438.92
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Solution
The fourth proportional to 428,497.36, 642,544.56 and 158,438.92 is: 237,583.88
Step by Step Solution
- Step 1: Write the proportion equation
428,497.36 : 642,544.56 = 158,438.92 : x - Step 2: Convert to fraction form
428,497.36/642,544.56 = 158,438.92/x - Step 3: Cross multiply
428,497.36x = 642,544.56 × 158,438.92 - Step 4: Simplify right side
428,497.36x = 101,804,066,138.28 - Step 5: Solve for x
x = 101,804,066,138.28/428,497.36 - Step 6: Final answer
x = 237,583.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.