Finding the Fourth Proportional to 811,225.72, 1,216,745.60 and 212,244.68
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Solution
The fourth proportional to 811,225.72, 1,216,745.60 and 212,244.68 is: 318,342.69
Step by Step Solution
- Step 1: Write the proportion equation
811,225.72 : 1,216,745.60 = 212,244.68 : x - Step 2: Convert to fraction form
811,225.72/1,216,745.60 = 212,244.68/x - Step 3: Cross multiply
811,225.72x = 1,216,745.60 × 212,244.68 - Step 4: Simplify right side
811,225.72x = 258,247,780,513.41 - Step 5: Solve for x
x = 258,247,780,513.41/811,225.72 - Step 6: Final answer
x = 318,342.69
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.