Finding the Fourth Proportional to 221,323.40, 332,330.70 and 128,011.40
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Solution
The fourth proportional to 221,323.40, 332,330.70 and 128,011.40 is: 192,216.99
Step by Step Solution
- Step 1: Write the proportion equation
221,323.40 : 332,330.70 = 128,011.40 : x - Step 2: Convert to fraction form
221,323.40/332,330.70 = 128,011.40/x - Step 3: Cross multiply
221,323.40x = 332,330.70 × 128,011.40 - Step 4: Simplify right side
221,323.40x = 42,542,118,169.98 - Step 5: Solve for x
x = 42,542,118,169.98/221,323.40 - Step 6: Final answer
x = 192,216.99
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1.5x scale
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.