Finding the Fourth Proportional to 221,464.98, 305,617.41 and 120,863.70
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Solution
The fourth proportional to 221,464.98, 305,617.41 and 120,863.70 is: 166,789.58
Step by Step Solution
- Step 1: Write the proportion equation
221,464.98 : 305,617.41 = 120,863.70 : x - Step 2: Convert to fraction form
221,464.98/305,617.41 = 120,863.70/x - Step 3: Cross multiply
221,464.98x = 305,617.41 × 120,863.70 - Step 4: Simplify right side
221,464.98x = 36,938,050,957.02 - Step 5: Solve for x
x = 36,938,050,957.02/221,464.98 - Step 6: Final answer
x = 166,789.58
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.