Finding the Fourth Proportional to 205,235.21, 307,863.20 and 78,831.14
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Solution
The fourth proportional to 205,235.21, 307,863.20 and 78,831.14 is: 118,250.70
Step by Step Solution
- Step 1: Write the proportion equation
205,235.21 : 307,863.20 = 78,831.14 : x - Step 2: Convert to fraction form
205,235.21/307,863.20 = 78,831.14/x - Step 3: Cross multiply
205,235.21x = 307,863.20 × 78,831.14 - Step 4: Simplify right side
205,235.21x = 24,269,207,020.05 - Step 5: Solve for x
x = 24,269,207,020.05/205,235.21 - Step 6: Final answer
x = 118,250.70
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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.