Finding the Fourth Proportional to 210,785.45, 290,877.75 and 115,290.09
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Solution
The fourth proportional to 210,785.45, 290,877.75 and 115,290.09 is: 159,096.95
Step by Step Solution
- Step 1: Write the proportion equation
210,785.45 : 290,877.75 = 115,290.09 : x - Step 2: Convert to fraction form
210,785.45/290,877.75 = 115,290.09/x - Step 3: Cross multiply
210,785.45x = 290,877.75 × 115,290.09 - Step 4: Simplify right side
210,785.45x = 33,535,321,976.50 - Step 5: Solve for x
x = 33,535,321,976.50/210,785.45 - Step 6: Final answer
x = 159,096.95
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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.