Finding the Fourth Proportional to 210,515.43, 290,507.87 and 115,020.08
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Solution
The fourth proportional to 210,515.43, 290,507.87 and 115,020.08 is: 158,725.83
Step by Step Solution
- Step 1: Write the proportion equation
210,515.43 : 290,507.87 = 115,020.08 : x - Step 2: Convert to fraction form
210,515.43/290,507.87 = 115,020.08/x - Step 3: Cross multiply
210,515.43x = 290,507.87 × 115,020.08 - Step 4: Simplify right side
210,515.43x = 33,414,237,283.04 - Step 5: Solve for x
x = 33,414,237,283.04/210,515.43 - Step 6: Final answer
x = 158,725.83
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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.