Finding the Fourth Proportional to 324,137.60, 486,206.40 and 212,163.20
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Solution
The fourth proportional to 324,137.60, 486,206.40 and 212,163.20 is: 318,244.80
Step by Step Solution
- Step 1: Write the proportion equation
324,137.60 : 486,206.40 = 212,163.20 : x - Step 2: Convert to fraction form
324,137.60/486,206.40 = 212,163.20/x - Step 3: Cross multiply
324,137.60x = 486,206.40 × 212,163.20 - Step 4: Simplify right side
324,137.60x = 103,155,105,684.48 - Step 5: Solve for x
x = 103,155,105,684.48/324,137.60 - Step 6: Final answer
x = 318,244.80
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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.