Finding the Fourth Proportional to 391,840.56, 587,816.18 and 125,538.78
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Solution
The fourth proportional to 391,840.56, 587,816.18 and 125,538.78 is: 188,325.90
Step by Step Solution
- Step 1: Write the proportion equation
391,840.56 : 587,816.18 = 125,538.78 : x - Step 2: Convert to fraction form
391,840.56/587,816.18 = 125,538.78/x - Step 3: Cross multiply
391,840.56x = 587,816.18 × 125,538.78 - Step 4: Simplify right side
391,840.56x = 73,793,723,476.23 - Step 5: Solve for x
x = 73,793,723,476.23/391,840.56 - Step 6: Final answer
x = 188,325.90
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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.