Finding the Fourth Proportional to 217,334.07, 299,920.82 and 121,840.79
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Solution
The fourth proportional to 217,334.07, 299,920.82 and 121,840.79 is: 168,140.17
Step by Step Solution
- Step 1: Write the proportion equation
217,334.07 : 299,920.82 = 121,840.79 : x - Step 2: Convert to fraction form
217,334.07/299,920.82 = 121,840.79/x - Step 3: Cross multiply
217,334.07x = 299,920.82 × 121,840.79 - Step 4: Simplify right side
217,334.07x = 36,542,587,537.44 - Step 5: Solve for x
x = 36,542,587,537.44/217,334.07 - Step 6: Final answer
x = 168,140.17
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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.