Finding the Fourth Proportional to 289,775.52, 399,906.96 and 218,027.68
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Solution
The fourth proportional to 289,775.52, 399,906.96 and 218,027.68 is: 300,890.80
Step by Step Solution
- Step 1: Write the proportion equation
289,775.52 : 399,906.96 = 218,027.68 : x - Step 2: Convert to fraction form
289,775.52/399,906.96 = 218,027.68/x - Step 3: Cross multiply
289,775.52x = 399,906.96 × 218,027.68 - Step 4: Simplify right side
289,775.52x = 87,190,786,704.65 - Step 5: Solve for x
x = 87,190,786,704.65/289,775.52 - Step 6: Final answer
x = 300,890.80
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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.