Finding the Fourth Proportional to 397,119.26, 548,028.79 and 215,831.21
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Solution
The fourth proportional to 397,119.26, 548,028.79 and 215,831.21 is: 297,849.35
Step by Step Solution
- Step 1: Write the proportion equation
397,119.26 : 548,028.79 = 215,831.21 : x - Step 2: Convert to fraction form
397,119.26/548,028.79 = 215,831.21/x - Step 3: Cross multiply
397,119.26x = 548,028.79 × 215,831.21 - Step 4: Simplify right side
397,119.26x = 118,281,713,580.81 - Step 5: Solve for x
x = 118,281,713,580.81/397,119.26 - Step 6: Final answer
x = 297,849.35
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.