Finding the Fourth Proportional to 391,724.80, 587,671.80 and 121,847.81
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Solution
The fourth proportional to 391,724.80, 587,671.80 and 121,847.81 is: 182,798.03
Step by Step Solution
- Step 1: Write the proportion equation
391,724.80 : 587,671.80 = 121,847.81 : x - Step 2: Convert to fraction form
391,724.80/587,671.80 = 121,847.81/x - Step 3: Cross multiply
391,724.80x = 587,671.80 × 121,847.81 - Step 4: Simplify right side
391,724.80x = 71,606,520,982.08 - Step 5: Solve for x
x = 71,606,520,982.08/391,724.80 - Step 6: Final answer
x = 182,798.03
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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.