Finding the Fourth Proportional to 278,593.26, 417,960.58 and 128,941.32
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Solution
The fourth proportional to 278,593.26, 417,960.58 and 128,941.32 is: 193,444.70
Step by Step Solution
- Step 1: Write the proportion equation
278,593.26 : 417,960.58 = 128,941.32 : x - Step 2: Convert to fraction form
278,593.26/417,960.58 = 128,941.32/x - Step 3: Cross multiply
278,593.26x = 417,960.58 × 128,941.32 - Step 4: Simplify right side
278,593.26x = 53,892,388,893.17 - Step 5: Solve for x
x = 53,892,388,893.17/278,593.26 - Step 6: Final answer
x = 193,444.70
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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.