Finding the Fourth Proportional to 262,630.98, 394,069.49 and 129,438.63
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Solution
The fourth proportional to 262,630.98, 394,069.49 and 129,438.63 is: 194,218.58
Step by Step Solution
- Step 1: Write the proportion equation
262,630.98 : 394,069.49 = 129,438.63 : x - Step 2: Convert to fraction form
262,630.98/394,069.49 = 129,438.63/x - Step 3: Cross multiply
262,630.98x = 394,069.49 × 129,438.63 - Step 4: Simplify right side
262,630.98x = 51,007,814,748.60 - Step 5: Solve for x
x = 51,007,814,748.60/262,630.98 - Step 6: Final answer
x = 194,218.58
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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.