Finding the Fourth Proportional to 217,217.13, 299,759.43 and 121,724.51
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Solution
The fourth proportional to 217,217.13, 299,759.43 and 121,724.51 is: 167,979.70
Step by Step Solution
- Step 1: Write the proportion equation
217,217.13 : 299,759.43 = 121,724.51 : x - Step 2: Convert to fraction form
217,217.13/299,759.43 = 121,724.51/x - Step 3: Cross multiply
217,217.13x = 299,759.43 × 121,724.51 - Step 4: Simplify right side
217,217.13x = 36,488,068,692.30 - Step 5: Solve for x
x = 36,488,068,692.30/217,217.13 - Step 6: Final answer
x = 167,979.70
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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.