Finding the Fourth Proportional to 138,289.49, 207,466.30 and 43,517.20
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Solution
The fourth proportional to 138,289.49, 207,466.30 and 43,517.20 is: 65,285.89
Step by Step Solution
- Step 1: Write the proportion equation
138,289.49 : 207,466.30 = 43,517.20 : x - Step 2: Convert to fraction form
138,289.49/207,466.30 = 43,517.20/x - Step 3: Cross multiply
138,289.49x = 207,466.30 × 43,517.20 - Step 4: Simplify right side
138,289.49x = 9,028,351,433.03 - Step 5: Solve for x
x = 9,028,351,433.03/138,289.49 - Step 6: Final answer
x = 65,285.89
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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.