Finding the Fourth Proportional to 385,427.26, 577,906.80 and 193,078.00
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Solution
The fourth proportional to 385,427.26, 577,906.80 and 193,078.00 is: 289,499.74
Step by Step Solution
- Step 1: Write the proportion equation
385,427.26 : 577,906.80 = 193,078.00 : x - Step 2: Convert to fraction form
385,427.26/577,906.80 = 193,078.00/x - Step 3: Cross multiply
385,427.26x = 577,906.80 × 193,078.00 - Step 4: Simplify right side
385,427.26x = 111,581,091,840.17 - Step 5: Solve for x
x = 111,581,091,840.17/385,427.26 - Step 6: Final answer
x = 289,499.74
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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.