Finding the Fourth Proportional to 354,450.13, 489,121.68 and 201,467.05
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Solution
The fourth proportional to 354,450.13, 489,121.68 and 201,467.05 is: 278,013.45
Step by Step Solution
- Step 1: Write the proportion equation
354,450.13 : 489,121.68 = 201,467.05 : x - Step 2: Convert to fraction form
354,450.13/489,121.68 = 201,467.05/x - Step 3: Cross multiply
354,450.13x = 489,121.68 × 201,467.05 - Step 4: Simplify right side
354,450.13x = 98,541,901,960.64 - Step 5: Solve for x
x = 98,541,901,960.64/354,450.13 - Step 6: Final answer
x = 278,013.45
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1.5x scale
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.