Finding the Fourth Proportional to 396,881.12, 548,170.80 and 289,278.56
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Solution
The fourth proportional to 396,881.12, 548,170.80 and 289,278.56 is: 399,550.52
Step by Step Solution
- Step 1: Write the proportion equation
396,881.12 : 548,170.80 = 289,278.56 : x - Step 2: Convert to fraction form
396,881.12/548,170.80 = 289,278.56/x - Step 3: Cross multiply
396,881.12x = 548,170.80 × 289,278.56 - Step 4: Simplify right side
396,881.12x = 158,574,059,658.05 - Step 5: Solve for x
x = 158,574,059,658.05/396,881.12 - Step 6: Final answer
x = 399,550.52
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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.