Finding the Fourth Proportional to 326,393.64, 489,236.20 and 126,655.20
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Solution
The fourth proportional to 326,393.64, 489,236.20 and 126,655.20 is: 189,845.33
Step by Step Solution
- Step 1: Write the proportion equation
326,393.64 : 489,236.20 = 126,655.20 : x - Step 2: Convert to fraction form
326,393.64/489,236.20 = 126,655.20/x - Step 3: Cross multiply
326,393.64x = 489,236.20 × 126,655.20 - Step 4: Simplify right side
326,393.64x = 61,964,308,758.24 - Step 5: Solve for x
x = 61,964,308,758.24/326,393.64 - Step 6: Final answer
x = 189,845.33
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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.