Finding the Fourth Proportional to 208,879.41, 288,258.81 and 113,386.10
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Solution
The fourth proportional to 208,879.41, 288,258.81 and 113,386.10 is: 156,475.65
Step by Step Solution
- Step 1: Write the proportion equation
208,879.41 : 288,258.81 = 113,386.10 : x - Step 2: Convert to fraction form
208,879.41/288,258.81 = 113,386.10/x - Step 3: Cross multiply
208,879.41x = 288,258.81 × 113,386.10 - Step 4: Simplify right side
208,879.41x = 32,684,542,256.54 - Step 5: Solve for x
x = 32,684,542,256.54/208,879.41 - Step 6: Final answer
x = 156,475.65
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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.