Finding the Fourth Proportional to 221,223.40, 331,883.70 and 71,438.20
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Solution
The fourth proportional to 221,223.40, 331,883.70 and 71,438.20 is: 107,172.99
Step by Step Solution
- Step 1: Write the proportion equation
221,223.40 : 331,883.70 = 71,438.20 : x - Step 2: Convert to fraction form
221,223.40/331,883.70 = 71,438.20/x - Step 3: Cross multiply
221,223.40x = 331,883.70 × 71,438.20 - Step 4: Simplify right side
221,223.40x = 23,709,174,137.34 - Step 5: Solve for x
x = 23,709,174,137.34/221,223.40 - Step 6: Final answer
x = 107,172.99
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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.