Finding the Fourth Proportional to 420,568.64, 580,377.24 and 239,276.68
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Solution
The fourth proportional to 420,568.64, 580,377.24 and 239,276.68 is: 330,197.56
Step by Step Solution
- Step 1: Write the proportion equation
420,568.64 : 580,377.24 = 239,276.68 : x - Step 2: Convert to fraction form
420,568.64/580,377.24 = 239,276.68/x - Step 3: Cross multiply
420,568.64x = 580,377.24 × 239,276.68 - Step 4: Simplify right side
420,568.64x = 138,870,739,134.76 - Step 5: Solve for x
x = 138,870,739,134.76/420,568.64 - Step 6: Final answer
x = 330,197.56
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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.