Finding the Fourth Proportional to 217,451.16, 300,083.68 and 121,962.96
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Solution
The fourth proportional to 217,451.16, 300,083.68 and 121,962.96 is: 168,309.49
Step by Step Solution
- Step 1: Write the proportion equation
217,451.16 : 300,083.68 = 121,962.96 : x - Step 2: Convert to fraction form
217,451.16/300,083.68 = 121,962.96/x - Step 3: Cross multiply
217,451.16x = 300,083.68 × 121,962.96 - Step 4: Simplify right side
217,451.16x = 36,599,093,860.49 - Step 5: Solve for x
x = 36,599,093,860.49/217,451.16 - Step 6: Final answer
x = 168,309.49
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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.