Finding the Fourth Proportional to 278,538.75, 417,808.13 and 153,879.75
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Solution
The fourth proportional to 278,538.75, 417,808.13 and 153,879.75 is: 230,819.63
Step by Step Solution
- Step 1: Write the proportion equation
278,538.75 : 417,808.13 = 153,879.75 : x - Step 2: Convert to fraction form
278,538.75/417,808.13 = 153,879.75/x - Step 3: Cross multiply
278,538.75x = 417,808.13 × 153,879.75 - Step 4: Simplify right side
278,538.75x = 64,292,209,822.97 - Step 5: Solve for x
x = 64,292,209,822.97/278,538.75 - Step 6: Final answer
x = 230,819.63
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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.