Finding the Fourth Proportional to 207,420.40, 311,130.60 and 67,193.20
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Solution
The fourth proportional to 207,420.40, 311,130.60 and 67,193.20 is: 100,789.80
Step by Step Solution
- Step 1: Write the proportion equation
207,420.40 : 311,130.60 = 67,193.20 : x - Step 2: Convert to fraction form
207,420.40/311,130.60 = 67,193.20/x - Step 3: Cross multiply
207,420.40x = 311,130.60 × 67,193.20 - Step 4: Simplify right side
207,420.40x = 20,905,860,631.92 - Step 5: Solve for x
x = 20,905,860,631.92/207,420.40 - Step 6: Final answer
x = 100,789.80
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1.5x scale
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.