Finding the Fourth Proportional to 217,859.19, 300,673.91 and 122,365.90
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Solution
The fourth proportional to 217,859.19, 300,673.91 and 122,365.90 is: 168,880.80
Step by Step Solution
- Step 1: Write the proportion equation
217,859.19 : 300,673.91 = 122,365.90 : x - Step 2: Convert to fraction form
217,859.19/300,673.91 = 122,365.90/x - Step 3: Cross multiply
217,859.19x = 300,673.91 × 122,365.90 - Step 4: Simplify right side
217,859.19x = 36,792,233,603.67 - Step 5: Solve for x
x = 36,792,233,603.67/217,859.19 - Step 6: Final answer
x = 168,880.80
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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.