Finding the Fourth Proportional to 354,839.13, 489,660.93 and 201,862.94
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Solution
The fourth proportional to 354,839.13, 489,660.93 and 201,862.94 is: 278,561.14
Step by Step Solution
- Step 1: Write the proportion equation
354,839.13 : 489,660.93 = 201,862.94 : x - Step 2: Convert to fraction form
354,839.13/489,660.93 = 201,862.94/x - Step 3: Cross multiply
354,839.13x = 489,660.93 × 201,862.94 - Step 4: Simplify right side
354,839.13x = 98,844,392,484.63 - Step 5: Solve for x
x = 98,844,392,484.63/354,839.13 - Step 6: Final answer
x = 278,561.14
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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.