Finding the Fourth Proportional to 280,485.20, 387,071.68 and 159,635.68
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Solution
The fourth proportional to 280,485.20, 387,071.68 and 159,635.68 is: 220,298.44
Step by Step Solution
- Step 1: Write the proportion equation
280,485.20 : 387,071.68 = 159,635.68 : x - Step 2: Convert to fraction form
280,485.20/387,071.68 = 159,635.68/x - Step 3: Cross multiply
280,485.20x = 387,071.68 × 159,635.68 - Step 4: Simplify right side
280,485.20x = 61,790,450,845.54 - Step 5: Solve for x
x = 61,790,450,845.54/280,485.20 - Step 6: Final answer
x = 220,298.44
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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.