Finding the Fourth Proportional to 258,163.76, 356,270.56 and 143,453.00
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Solution
The fourth proportional to 258,163.76, 356,270.56 and 143,453.00 is: 197,967.68
Step by Step Solution
- Step 1: Write the proportion equation
258,163.76 : 356,270.56 = 143,453.00 : x - Step 2: Convert to fraction form
258,163.76/356,270.56 = 143,453.00/x - Step 3: Cross multiply
258,163.76x = 356,270.56 × 143,453.00 - Step 4: Simplify right side
258,163.76x = 51,108,078,503.69 - Step 5: Solve for x
x = 51,108,078,503.69/258,163.76 - Step 6: Final answer
x = 197,967.68
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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.