Finding the Fourth Proportional to 258,163.29, 356,260.86 and 143,442.99
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Solution
The fourth proportional to 258,163.29, 356,260.86 and 143,442.99 is: 197,948.84
Step by Step Solution
- Step 1: Write the proportion equation
258,163.29 : 356,260.86 = 143,442.99 : x - Step 2: Convert to fraction form
258,163.29/356,260.86 = 143,442.99/x - Step 3: Cross multiply
258,163.29x = 356,260.86 × 143,442.99 - Step 4: Simplify right side
258,163.29x = 51,103,122,978.37 - Step 5: Solve for x
x = 51,103,122,978.37/258,163.29 - Step 6: Final answer
x = 197,948.84
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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.