Finding the Fourth Proportional to 281,720.09, 388,775.19 and 152,658.60
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Solution
The fourth proportional to 281,720.09, 388,775.19 and 152,658.60 is: 210,669.67
Step by Step Solution
- Step 1: Write the proportion equation
281,720.09 : 388,775.19 = 152,658.60 : x - Step 2: Convert to fraction form
281,720.09/388,775.19 = 152,658.60/x - Step 3: Cross multiply
281,720.09x = 388,775.19 × 152,658.60 - Step 4: Simplify right side
281,720.09x = 59,349,876,220.13 - Step 5: Solve for x
x = 59,349,876,220.13/281,720.09 - Step 6: Final answer
x = 210,669.67
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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.