Finding the Fourth Proportional to 221,228.20, 305,313.06 and 125,764.84
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Solution
The fourth proportional to 221,228.20, 305,313.06 and 125,764.84 is: 173,565.79
Step by Step Solution
- Step 1: Write the proportion equation
221,228.20 : 305,313.06 = 125,764.84 : x - Step 2: Convert to fraction form
221,228.20/305,313.06 = 125,764.84/x - Step 3: Cross multiply
221,228.20x = 305,313.06 × 125,764.84 - Step 4: Simplify right side
221,228.20x = 38,397,648,140.81 - Step 5: Solve for x
x = 38,397,648,140.81/221,228.20 - Step 6: Final answer
x = 173,565.79
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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.