Finding the Fourth Proportional to 217,240.65, 299,775.74 and 121,728.96
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Solution
The fourth proportional to 217,240.65, 299,775.74 and 121,728.96 is: 167,976.80
Step by Step Solution
- Step 1: Write the proportion equation
217,240.65 : 299,775.74 = 121,728.96 : x - Step 2: Convert to fraction form
217,240.65/299,775.74 = 121,728.96/x - Step 3: Cross multiply
217,240.65x = 299,775.74 × 121,728.96 - Step 4: Simplify right side
217,240.65x = 36,491,388,454.79 - Step 5: Solve for x
x = 36,491,388,454.79/217,240.65 - Step 6: Final answer
x = 167,976.80
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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.