Finding the Fourth Proportional to 210,489.00, 290,485.36 and 128,791.70
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Solution
The fourth proportional to 210,489.00, 290,485.36 and 128,791.70 is: 177,738.99
Step by Step Solution
- Step 1: Write the proportion equation
210,489.00 : 290,485.36 = 128,791.70 : x - Step 2: Convert to fraction form
210,489.00/290,485.36 = 128,791.70/x - Step 3: Cross multiply
210,489.00x = 290,485.36 × 128,791.70 - Step 4: Simplify right side
210,489.00x = 37,412,102,682.63 - Step 5: Solve for x
x = 37,412,102,682.63/210,489.00 - Step 6: Final answer
x = 177,738.99
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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.