Finding the Fourth Proportional to 811,212.72, 1,216,726.10 and 212,231.68
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Solution
The fourth proportional to 811,212.72, 1,216,726.10 and 212,231.68 is: 318,323.19
Step by Step Solution
- Step 1: Write the proportion equation
811,212.72 : 1,216,726.10 = 212,231.68 : x - Step 2: Convert to fraction form
811,212.72/1,216,726.10 = 212,231.68/x - Step 3: Cross multiply
811,212.72x = 1,216,726.10 × 212,231.68 - Step 4: Simplify right side
811,212.72x = 258,227,824,302.85 - Step 5: Solve for x
x = 258,227,824,302.85/811,212.72 - Step 6: Final answer
x = 318,323.19
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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.