Finding the Fourth Proportional to 228,708.75, 315,618.09 and 139,284.75
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Solution
The fourth proportional to 228,708.75, 315,618.09 and 139,284.75 is: 192,212.96
Step by Step Solution
- Step 1: Write the proportion equation
228,708.75 : 315,618.09 = 139,284.75 : x - Step 2: Convert to fraction form
228,708.75/315,618.09 = 139,284.75/x - Step 3: Cross multiply
228,708.75x = 315,618.09 × 139,284.75 - Step 4: Simplify right side
228,708.75x = 43,960,786,761.13 - Step 5: Solve for x
x = 43,960,786,761.13/228,708.75 - Step 6: Final answer
x = 192,212.96
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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.