Finding the Fourth Proportional to 811,205.67, 1,216,715.55 and 212,224.65
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Solution
The fourth proportional to 811,205.67, 1,216,715.55 and 212,224.65 is: 318,312.66
Step by Step Solution
- Step 1: Write the proportion equation
811,205.67 : 1,216,715.55 = 212,224.65 : x - Step 2: Convert to fraction form
811,205.67/1,216,715.55 = 212,224.65/x - Step 3: Cross multiply
811,205.67x = 1,216,715.55 × 212,224.65 - Step 4: Simplify right side
811,205.67x = 258,217,031,748.31 - Step 5: Solve for x
x = 258,217,031,748.31/811,205.67 - Step 6: Final answer
x = 318,312.66
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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.