Finding the Fourth Proportional to 420,247.40, 629,933.70 and 230,415.80
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Solution
The fourth proportional to 420,247.40, 629,933.70 and 230,415.80 is: 345,383.88
Step by Step Solution
- Step 1: Write the proportion equation
420,247.40 : 629,933.70 = 230,415.80 : x - Step 2: Convert to fraction form
420,247.40/629,933.70 = 230,415.80/x - Step 3: Cross multiply
420,247.40x = 629,933.70 × 230,415.80 - Step 4: Simplify right side
420,247.40x = 145,146,677,432.46 - Step 5: Solve for x
x = 145,146,677,432.46/420,247.40 - Step 6: Final answer
x = 345,383.88
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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.