Finding the Fourth Proportional to 280,454.40, 420,827.40 and 122,698.80
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Solution
The fourth proportional to 280,454.40, 420,827.40 and 122,698.80 is: 184,111.99
Step by Step Solution
- Step 1: Write the proportion equation
280,454.40 : 420,827.40 = 122,698.80 : x - Step 2: Convert to fraction form
280,454.40/420,827.40 = 122,698.80/x - Step 3: Cross multiply
280,454.40x = 420,827.40 × 122,698.80 - Step 4: Simplify right side
280,454.40x = 51,635,016,987.12 - Step 5: Solve for x
x = 51,635,016,987.12/280,454.40 - Step 6: Final answer
x = 184,111.99
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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.