Finding the Fourth Proportional to 261,817.41, 392,393.61 and 135,433.92
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Solution
The fourth proportional to 261,817.41, 392,393.61 and 135,433.92 is: 202,978.88
Step by Step Solution
- Step 1: Write the proportion equation
261,817.41 : 392,393.61 = 135,433.92 : x - Step 2: Convert to fraction form
261,817.41/392,393.61 = 135,433.92/x - Step 3: Cross multiply
261,817.41x = 392,393.61 × 135,433.92 - Step 4: Simplify right side
261,817.41x = 53,143,404,785.25 - Step 5: Solve for x
x = 53,143,404,785.25/261,817.41 - Step 6: Final answer
x = 202,978.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.