Finding the Fourth Proportional to 397,258.21, 548,215.86 and 215,969.68
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Solution
The fourth proportional to 397,258.21, 548,215.86 and 215,969.68 is: 298,037.90
Step by Step Solution
- Step 1: Write the proportion equation
397,258.21 : 548,215.86 = 215,969.68 : x - Step 2: Convert to fraction form
397,258.21/548,215.86 = 215,969.68/x - Step 3: Cross multiply
397,258.21x = 548,215.86 × 215,969.68 - Step 4: Simplify right side
397,258.21x = 118,398,003,855.13 - Step 5: Solve for x
x = 118,398,003,855.13/397,258.21 - Step 6: Final answer
x = 298,037.90
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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.