Finding the Fourth Proportional to 391,765.75, 587,451.79 and 181,551.31
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Solution
The fourth proportional to 391,765.75, 587,451.79 and 181,551.31 is: 272,235.75
Step by Step Solution
- Step 1: Write the proportion equation
391,765.75 : 587,451.79 = 181,551.31 : x - Step 2: Convert to fraction form
391,765.75/587,451.79 = 181,551.31/x - Step 3: Cross multiply
391,765.75x = 587,451.79 × 181,551.31 - Step 4: Simplify right side
391,765.75x = 106,652,640,794.66 - Step 5: Solve for x
x = 106,652,640,794.66/391,765.75 - Step 6: Final answer
x = 272,235.75
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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.