Finding the Fourth Proportional to 430,659.75, 645,995.39 and 135,171.75
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Solution
The fourth proportional to 430,659.75, 645,995.39 and 135,171.75 is: 202,759.43
Step by Step Solution
- Step 1: Write the proportion equation
430,659.75 : 645,995.39 = 135,171.75 : x - Step 2: Convert to fraction form
430,659.75/645,995.39 = 135,171.75/x - Step 3: Cross multiply
430,659.75x = 645,995.39 × 135,171.75 - Step 4: Simplify right side
430,659.75x = 87,320,326,682.37 - Step 5: Solve for x
x = 87,320,326,682.37/430,659.75 - Step 6: Final answer
x = 202,759.43
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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.