Finding the Fourth Proportional to 397,289.92, 548,258.40 and 218,438.08
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Solution
The fourth proportional to 397,289.92, 548,258.40 and 218,438.08 is: 301,443.62
Step by Step Solution
- Step 1: Write the proportion equation
397,289.92 : 548,258.40 = 218,438.08 : x - Step 2: Convert to fraction form
397,289.92/548,258.40 = 218,438.08/x - Step 3: Cross multiply
397,289.92x = 548,258.40 × 218,438.08 - Step 4: Simplify right side
397,289.92x = 119,760,512,239.87 - Step 5: Solve for x
x = 119,760,512,239.87/397,289.92 - Step 6: Final answer
x = 301,443.62
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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.