Finding the Fourth Proportional to 485,987.33, 670,649.57 and 271,121.87
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Solution
The fourth proportional to 485,987.33, 670,649.57 and 271,121.87 is: 374,140.95
Step by Step Solution
- Step 1: Write the proportion equation
485,987.33 : 670,649.57 = 271,121.87 : x - Step 2: Convert to fraction form
485,987.33/670,649.57 = 271,121.87/x - Step 3: Cross multiply
485,987.33x = 670,649.57 × 271,121.87 - Step 4: Simplify right side
485,987.33x = 181,827,760,824.24 - Step 5: Solve for x
x = 181,827,760,824.24/485,987.33 - Step 6: Final answer
x = 374,140.95
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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.