Finding the Fourth Proportional to 203,752.20, 305,714.70 and 128,929.80
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Solution
The fourth proportional to 203,752.20, 305,714.70 and 128,929.80 is: 193,449.37
Step by Step Solution
- Step 1: Write the proportion equation
203,752.20 : 305,714.70 = 128,929.80 : x - Step 2: Convert to fraction form
203,752.20/305,714.70 = 128,929.80/x - Step 3: Cross multiply
203,752.20x = 305,714.70 × 128,929.80 - Step 4: Simplify right side
203,752.20x = 39,415,735,128.06 - Step 5: Solve for x
x = 39,415,735,128.06/203,752.20 - Step 6: Final answer
x = 193,449.37
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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.