Finding the Fourth Proportional to 491,055.21, 677,649.65 and 276,195.15
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Solution
The fourth proportional to 491,055.21, 677,649.65 and 276,195.15 is: 381,145.63
Step by Step Solution
- Step 1: Write the proportion equation
491,055.21 : 677,649.65 = 276,195.15 : x - Step 2: Convert to fraction form
491,055.21/677,649.65 = 276,195.15/x - Step 3: Cross multiply
491,055.21x = 677,649.65 × 276,195.15 - Step 4: Simplify right side
491,055.21x = 187,163,545,348.22 - Step 5: Solve for x
x = 187,163,545,348.22/491,055.21 - Step 6: Final answer
x = 381,145.63
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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.