Finding the Fourth Proportional to 204,775.80, 307,163.70 and 86,580.60
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Solution
The fourth proportional to 204,775.80, 307,163.70 and 86,580.60 is: 129,870.90
Step by Step Solution
- Step 1: Write the proportion equation
204,775.80 : 307,163.70 = 86,580.60 : x - Step 2: Convert to fraction form
204,775.80/307,163.70 = 86,580.60/x - Step 3: Cross multiply
204,775.80x = 307,163.70 × 86,580.60 - Step 4: Simplify right side
204,775.80x = 26,594,417,444.22 - Step 5: Solve for x
x = 26,594,417,444.22/204,775.80 - Step 6: Final answer
x = 129,870.90
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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.