Finding the Fourth Proportional to 210,812.66, 290,917.68 and 115,318.52
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Solution
The fourth proportional to 210,812.66, 290,917.68 and 115,318.52 is: 159,137.48
Step by Step Solution
- Step 1: Write the proportion equation
210,812.66 : 290,917.68 = 115,318.52 : x - Step 2: Convert to fraction form
210,812.66/290,917.68 = 115,318.52/x - Step 3: Cross multiply
210,812.66x = 290,917.68 × 115,318.52 - Step 4: Simplify right side
210,812.66x = 33,548,196,299.43 - Step 5: Solve for x
x = 33,548,196,299.43/210,812.66 - Step 6: Final answer
x = 159,137.48
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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.