Finding the Fourth Proportional to 391,811.18, 587,717.44 and 107,505.63
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Solution
The fourth proportional to 391,811.18, 587,717.44 and 107,505.63 is: 161,258.63
Step by Step Solution
- Step 1: Write the proportion equation
391,811.18 : 587,717.44 = 107,505.63 : x - Step 2: Convert to fraction form
391,811.18/587,717.44 = 107,505.63/x - Step 3: Cross multiply
391,811.18x = 587,717.44 × 107,505.63 - Step 4: Simplify right side
391,811.18x = 63,182,933,380.42 - Step 5: Solve for x
x = 63,182,933,380.42/391,811.18 - Step 6: Final answer
x = 161,258.63
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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.