Finding the Fourth Proportional to 415,455.28, 573,801.20 and 279,252.76
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Solution
The fourth proportional to 415,455.28, 573,801.20 and 279,252.76 is: 385,686.68
Step by Step Solution
- Step 1: Write the proportion equation
415,455.28 : 573,801.20 = 279,252.76 : x - Step 2: Convert to fraction form
415,455.28/573,801.20 = 279,252.76/x - Step 3: Cross multiply
415,455.28x = 573,801.20 × 279,252.76 - Step 4: Simplify right side
415,455.28x = 160,235,568,791.31 - Step 5: Solve for x
x = 160,235,568,791.31/415,455.28 - Step 6: Final answer
x = 385,686.68
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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.