Finding the Fourth Proportional to 405,321.12, 607,929.84 and 168,619.68
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Solution
The fourth proportional to 405,321.12, 607,929.84 and 168,619.68 is: 252,907.95
Step by Step Solution
- Step 1: Write the proportion equation
405,321.12 : 607,929.84 = 168,619.68 : x - Step 2: Convert to fraction form
405,321.12/607,929.84 = 168,619.68/x - Step 3: Cross multiply
405,321.12x = 607,929.84 × 168,619.68 - Step 4: Simplify right side
405,321.12x = 102,508,935,083.25 - Step 5: Solve for x
x = 102,508,935,083.25/405,321.12 - Step 6: Final answer
x = 252,907.95
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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.