Finding the Fourth Proportional to 221,219.28, 305,281.44 and 125,720.28
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Solution
The fourth proportional to 221,219.28, 305,281.44 and 125,720.28 is: 173,493.32
Step by Step Solution
- Step 1: Write the proportion equation
221,219.28 : 305,281.44 = 125,720.28 : x - Step 2: Convert to fraction form
221,219.28/305,281.44 = 125,720.28/x - Step 3: Cross multiply
221,219.28x = 305,281.44 × 125,720.28 - Step 4: Simplify right side
221,219.28x = 38,380,068,115.60 - Step 5: Solve for x
x = 38,380,068,115.60/221,219.28 - Step 6: Final answer
x = 173,493.32
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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.