Finding the Fourth Proportional to 263,812.36, 395,780.64 and 86,318.68
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Solution
The fourth proportional to 263,812.36, 395,780.64 and 86,318.68 is: 129,498.34
Step by Step Solution
- Step 1: Write the proportion equation
263,812.36 : 395,780.64 = 86,318.68 : x - Step 2: Convert to fraction form
263,812.36/395,780.64 = 86,318.68/x - Step 3: Cross multiply
263,812.36x = 395,780.64 × 86,318.68 - Step 4: Simplify right side
263,812.36x = 34,163,262,414.36 - Step 5: Solve for x
x = 34,163,262,414.36/263,812.36 - Step 6: Final answer
x = 129,498.34
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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.