Finding the Fourth Proportional to 217,728.61, 300,465.86 and 122,235.99
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Solution
The fourth proportional to 217,728.61, 300,465.86 and 122,235.99 is: 168,685.87
Step by Step Solution
- Step 1: Write the proportion equation
217,728.61 : 300,465.86 = 122,235.99 : x - Step 2: Convert to fraction form
217,728.61/300,465.86 = 122,235.99/x - Step 3: Cross multiply
217,728.61x = 300,465.86 × 122,235.99 - Step 4: Simplify right side
217,728.61x = 36,727,740,120.37 - Step 5: Solve for x
x = 36,727,740,120.37/217,728.61 - Step 6: Final answer
x = 168,685.87
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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.