Finding the Fourth Proportional to 204,822.28, 307,285.26 and 86,432.68
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Solution
The fourth proportional to 204,822.28, 307,285.26 and 86,432.68 is: 129,670.90
Step by Step Solution
- Step 1: Write the proportion equation
204,822.28 : 307,285.26 = 86,432.68 : x - Step 2: Convert to fraction form
204,822.28/307,285.26 = 86,432.68/x - Step 3: Cross multiply
204,822.28x = 307,285.26 × 86,432.68 - Step 4: Simplify right side
204,822.28x = 26,559,488,546.30 - Step 5: Solve for x
x = 26,559,488,546.30/204,822.28 - Step 6: Final answer
x = 129,670.90
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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.