Finding the Fourth Proportional to 282,018.21, 422,805.42 and 139,765.68
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Solution
The fourth proportional to 282,018.21, 422,805.42 and 139,765.68 is: 209,538.55
Step by Step Solution
- Step 1: Write the proportion equation
282,018.21 : 422,805.42 = 139,765.68 : x - Step 2: Convert to fraction form
282,018.21/422,805.42 = 139,765.68/x - Step 3: Cross multiply
282,018.21x = 422,805.42 × 139,765.68 - Step 4: Simplify right side
282,018.21x = 59,093,687,033.99 - Step 5: Solve for x
x = 59,093,687,033.99/282,018.21 - Step 6: Final answer
x = 209,538.55
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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.