Finding the Fourth Proportional to 262,113.80, 393,170.70 and 257,739.80
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Solution
The fourth proportional to 262,113.80, 393,170.70 and 257,739.80 is: 386,609.70
Step by Step Solution
- Step 1: Write the proportion equation
262,113.80 : 393,170.70 = 257,739.80 : x - Step 2: Convert to fraction form
262,113.80/393,170.70 = 257,739.80/x - Step 3: Cross multiply
262,113.80x = 393,170.70 × 257,739.80 - Step 4: Simplify right side
262,113.80x = 101,335,737,583.86 - Step 5: Solve for x
x = 101,335,737,583.86/262,113.80 - Step 6: Final answer
x = 386,609.70
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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.