Finding the Fourth Proportional to 398,826.64, 550,370.73 and 217,542.70
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Solution
The fourth proportional to 398,826.64, 550,370.73 and 217,542.70 is: 300,203.45
Step by Step Solution
- Step 1: Write the proportion equation
398,826.64 : 550,370.73 = 217,542.70 : x - Step 2: Convert to fraction form
398,826.64/550,370.73 = 217,542.70/x - Step 3: Cross multiply
398,826.64x = 550,370.73 × 217,542.70 - Step 4: Simplify right side
398,826.64x = 119,729,134,605.17 - Step 5: Solve for x
x = 119,729,134,605.17/398,826.64 - Step 6: Final answer
x = 300,203.45
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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.