Finding the Fourth Proportional to 811,205.12, 1,216,714.71 and 212,224.08
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Solution
The fourth proportional to 811,205.12, 1,216,714.71 and 212,224.08 is: 318,311.80
Step by Step Solution
- Step 1: Write the proportion equation
811,205.12 : 1,216,714.71 = 212,224.08 : x - Step 2: Convert to fraction form
811,205.12/1,216,714.71 = 212,224.08/x - Step 3: Cross multiply
811,205.12x = 1,216,714.71 × 212,224.08 - Step 4: Simplify right side
811,205.12x = 258,216,159,952.22 - Step 5: Solve for x
x = 258,216,159,952.22/811,205.12 - Step 6: Final answer
x = 318,311.80
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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.