Finding the Fourth Proportional to 324,576.80, 486,865.20 and 312,135.20
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Solution
The fourth proportional to 324,576.80, 486,865.20 and 312,135.20 is: 468,202.80
Step by Step Solution
- Step 1: Write the proportion equation
324,576.80 : 486,865.20 = 312,135.20 : x - Step 2: Convert to fraction form
324,576.80/486,865.20 = 312,135.20/x - Step 3: Cross multiply
324,576.80x = 486,865.20 × 312,135.20 - Step 4: Simplify right side
324,576.80x = 151,967,766,575.04 - Step 5: Solve for x
x = 151,967,766,575.04/324,576.80 - Step 6: Final answer
x = 468,202.80
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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.