Finding the Fourth Proportional to 391,842.18, 587,818.62 and 125,540.40
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Solution
The fourth proportional to 391,842.18, 587,818.62 and 125,540.40 is: 188,328.33
Step by Step Solution
- Step 1: Write the proportion equation
391,842.18 : 587,818.62 = 125,540.40 : x - Step 2: Convert to fraction form
391,842.18/587,818.62 = 125,540.40/x - Step 3: Cross multiply
391,842.18x = 587,818.62 × 125,540.40 - Step 4: Simplify right side
391,842.18x = 73,794,984,682.25 - Step 5: Solve for x
x = 73,794,984,682.25/391,842.18 - Step 6: Final answer
x = 188,328.33
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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.