Finding the Fourth Proportional to 263,209.14, 394,813.71 and 76,220.64
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Solution
The fourth proportional to 263,209.14, 394,813.71 and 76,220.64 is: 114,330.96
Step by Step Solution
- Step 1: Write the proportion equation
263,209.14 : 394,813.71 = 76,220.64 : x - Step 2: Convert to fraction form
263,209.14/394,813.71 = 76,220.64/x - Step 3: Cross multiply
263,209.14x = 394,813.71 × 76,220.64 - Step 4: Simplify right side
263,209.14x = 30,092,953,656.97 - Step 5: Solve for x
x = 30,092,953,656.97/263,209.14 - Step 6: Final answer
x = 114,330.96
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Double scale
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Similar ratio
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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.