Finding the Fourth Proportional to 420,659.44, 580,560.96 and 239,415.46
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Solution
The fourth proportional to 420,659.44, 580,560.96 and 239,415.46 is: 330,422.32
Step by Step Solution
- Step 1: Write the proportion equation
420,659.44 : 580,560.96 = 239,415.46 : x - Step 2: Convert to fraction form
420,659.44/580,560.96 = 239,415.46/x - Step 3: Cross multiply
420,659.44x = 580,560.96 × 239,415.46 - Step 4: Simplify right side
420,659.44x = 138,995,269,296.44 - Step 5: Solve for x
x = 138,995,269,296.44/420,659.44 - Step 6: Final answer
x = 330,422.32
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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.