Finding the Fourth Proportional to 354,859.48, 489,640.57 and 201,888.74
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Solution
The fourth proportional to 354,859.48, 489,640.57 and 201,888.74 is: 278,569.18
Step by Step Solution
- Step 1: Write the proportion equation
354,859.48 : 489,640.57 = 201,888.74 : x - Step 2: Convert to fraction form
354,859.48/489,640.57 = 201,888.74/x - Step 3: Cross multiply
354,859.48x = 489,640.57 × 201,888.74 - Step 4: Simplify right side
354,859.48x = 98,852,914,272.54 - Step 5: Solve for x
x = 98,852,914,272.54/354,859.48 - Step 6: Final answer
x = 278,569.18
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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.