Finding the Fourth Proportional to 278,647.52, 417,971.21 and 68,283.63
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Solution
The fourth proportional to 278,647.52, 417,971.21 and 68,283.63 is: 102,425.43
Step by Step Solution
- Step 1: Write the proportion equation
278,647.52 : 417,971.21 = 68,283.63 : x - Step 2: Convert to fraction form
278,647.52/417,971.21 = 68,283.63/x - Step 3: Cross multiply
278,647.52x = 417,971.21 × 68,283.63 - Step 4: Simplify right side
278,647.52x = 28,540,591,112.87 - Step 5: Solve for x
x = 28,540,591,112.87/278,647.52 - Step 6: Final answer
x = 102,425.43
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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.