Finding the Fourth Proportional to 280,024.92, 420,177.48 and 128,221.68
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Solution
The fourth proportional to 280,024.92, 420,177.48 and 128,221.68 is: 192,396.67
Step by Step Solution
- Step 1: Write the proportion equation
280,024.92 : 420,177.48 = 128,221.68 : x - Step 2: Convert to fraction form
280,024.92/420,177.48 = 128,221.68/x - Step 3: Cross multiply
280,024.92x = 420,177.48 × 128,221.68 - Step 4: Simplify right side
280,024.92x = 53,875,862,383.77 - Step 5: Solve for x
x = 53,875,862,383.77/280,024.92 - Step 6: Final answer
x = 192,396.67
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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.