Finding the Fourth Proportional to 208,028.66, 312,258.36 and 128,124.19
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Solution
The fourth proportional to 208,028.66, 312,258.36 and 128,124.19 is: 192,318.92
Step by Step Solution
- Step 1: Write the proportion equation
208,028.66 : 312,258.36 = 128,124.19 : x - Step 2: Convert to fraction form
208,028.66/312,258.36 = 128,124.19/x - Step 3: Cross multiply
208,028.66x = 312,258.36 × 128,124.19 - Step 4: Simplify right side
208,028.66x = 40,007,847,884.44 - Step 5: Solve for x
x = 40,007,847,884.44/208,028.66 - Step 6: Final answer
x = 192,318.92
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.