Finding the Fourth Proportional to 485,791.20, 728,686.80 and 170,207.10
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Solution
The fourth proportional to 485,791.20, 728,686.80 and 170,207.10 is: 255,310.65
Step by Step Solution
- Step 1: Write the proportion equation
485,791.20 : 728,686.80 = 170,207.10 : x - Step 2: Convert to fraction form
485,791.20/728,686.80 = 170,207.10/x - Step 3: Cross multiply
485,791.20x = 728,686.80 × 170,207.10 - Step 4: Simplify right side
485,791.20x = 124,027,667,036.28 - Step 5: Solve for x
x = 124,027,667,036.28/485,791.20 - Step 6: Final answer
x = 255,310.65
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.