Finding the Fourth Proportional to 811,208.21, 1,216,719.35 and 212,227.17
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Solution
The fourth proportional to 811,208.21, 1,216,719.35 and 212,227.17 is: 318,316.43
Step by Step Solution
- Step 1: Write the proportion equation
811,208.21 : 1,216,719.35 = 212,227.17 : x - Step 2: Convert to fraction form
811,208.21/1,216,719.35 = 212,227.17/x - Step 3: Cross multiply
811,208.21x = 1,216,719.35 × 212,227.17 - Step 4: Simplify right side
811,208.21x = 258,220,904,334.74 - Step 5: Solve for x
x = 258,220,904,334.74/811,208.21 - Step 6: Final answer
x = 318,316.43
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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.