Finding the Fourth Proportional to 200,021.60, 275,899.74 and 128,288.00
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Solution
The fourth proportional to 200,021.60, 275,899.74 and 128,288.00 is: 176,954.02
Step by Step Solution
- Step 1: Write the proportion equation
200,021.60 : 275,899.74 = 128,288.00 : x - Step 2: Convert to fraction form
200,021.60/275,899.74 = 128,288.00/x - Step 3: Cross multiply
200,021.60x = 275,899.74 × 128,288.00 - Step 4: Simplify right side
200,021.60x = 35,394,624,465.62 - Step 5: Solve for x
x = 35,394,624,465.62/200,021.60 - Step 6: Final answer
x = 176,954.02
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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.