Finding the Fourth Proportional to 261,966.11, 393,021.48 and 104,305.28
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Solution
The fourth proportional to 261,966.11, 393,021.48 and 104,305.28 is: 156,486.71
Step by Step Solution
- Step 1: Write the proportion equation
261,966.11 : 393,021.48 = 104,305.28 : x - Step 2: Convert to fraction form
261,966.11/393,021.48 = 104,305.28/x - Step 3: Cross multiply
261,966.11x = 393,021.48 × 104,305.28 - Step 4: Simplify right side
261,966.11x = 40,994,213,552.31 - Step 5: Solve for x
x = 40,994,213,552.31/261,966.11 - Step 6: Final answer
x = 156,486.71
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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.