Finding the Fourth Proportional to 204,638.87, 306,999.92 and 86,310.63
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Solution
The fourth proportional to 204,638.87, 306,999.92 and 86,310.63 is: 129,483.50
Step by Step Solution
- Step 1: Write the proportion equation
204,638.87 : 306,999.92 = 86,310.63 : x - Step 2: Convert to fraction form
204,638.87/306,999.92 = 86,310.63/x - Step 3: Cross multiply
204,638.87x = 306,999.92 × 86,310.63 - Step 4: Simplify right side
204,638.87x = 26,497,356,720.93 - Step 5: Solve for x
x = 26,497,356,720.93/204,638.87 - Step 6: Final answer
x = 129,483.50
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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.