Finding the Fourth Proportional to 420,851.92, 580,752.12 and 239,608.12
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Solution
The fourth proportional to 420,851.92, 580,752.12 and 239,608.12 is: 330,645.81
Step by Step Solution
- Step 1: Write the proportion equation
420,851.92 : 580,752.12 = 239,608.12 : x - Step 2: Convert to fraction form
420,851.92/580,752.12 = 239,608.12/x - Step 3: Cross multiply
420,851.92x = 580,752.12 × 239,608.12 - Step 4: Simplify right side
420,851.92x = 139,152,923,659.21 - Step 5: Solve for x
x = 139,152,923,659.21/420,851.92 - Step 6: Final answer
x = 330,645.81
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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.