Finding the Fourth Proportional to 263,319.80, 394,979.70 and 210,831.80
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Solution
The fourth proportional to 263,319.80, 394,979.70 and 210,831.80 is: 316,247.70
Step by Step Solution
- Step 1: Write the proportion equation
263,319.80 : 394,979.70 = 210,831.80 : x - Step 2: Convert to fraction form
263,319.80/394,979.70 = 210,831.80/x - Step 3: Cross multiply
263,319.80x = 394,979.70 × 210,831.80 - Step 4: Simplify right side
263,319.80x = 83,274,281,114.46 - Step 5: Solve for x
x = 83,274,281,114.46/263,319.80 - Step 6: Final answer
x = 316,247.70
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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.