Finding the Fourth Proportional to 218,220.21, 301,140.99 and 122,726.90
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Solution
The fourth proportional to 218,220.21, 301,140.99 and 122,726.90 is: 169,361.49
Step by Step Solution
- Step 1: Write the proportion equation
218,220.21 : 301,140.99 = 122,726.90 : x - Step 2: Convert to fraction form
218,220.21/301,140.99 = 122,726.90/x - Step 3: Cross multiply
218,220.21x = 301,140.99 × 122,726.90 - Step 4: Simplify right side
218,220.21x = 36,958,100,918.48 - Step 5: Solve for x
x = 36,958,100,918.48/218,220.21 - Step 6: Final answer
x = 169,361.49
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1.5x scale
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.