Finding the Fourth Proportional to 257,780.97, 386,213.94 and 107,690.94
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Solution
The fourth proportional to 257,780.97, 386,213.94 and 107,690.94 is: 161,345.28
Step by Step Solution
- Step 1: Write the proportion equation
257,780.97 : 386,213.94 = 107,690.94 : x - Step 2: Convert to fraction form
257,780.97/386,213.94 = 107,690.94/x - Step 3: Cross multiply
257,780.97x = 386,213.94 × 107,690.94 - Step 4: Simplify right side
257,780.97x = 41,591,742,239.70 - Step 5: Solve for x
x = 41,591,742,239.70/257,780.97 - Step 6: Final answer
x = 161,345.28
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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.