Finding the Fourth Proportional to 255,739.40, 383,609.10 and 68,769.80
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Solution
The fourth proportional to 255,739.40, 383,609.10 and 68,769.80 is: 103,154.70
Step by Step Solution
- Step 1: Write the proportion equation
255,739.40 : 383,609.10 = 68,769.80 : x - Step 2: Convert to fraction form
255,739.40/383,609.10 = 68,769.80/x - Step 3: Cross multiply
255,739.40x = 383,609.10 × 68,769.80 - Step 4: Simplify right side
255,739.40x = 26,380,721,085.18 - Step 5: Solve for x
x = 26,380,721,085.18/255,739.40 - Step 6: Final answer
x = 103,154.70
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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.