Finding the Fourth Proportional to 426,664.68, 640,034.28 and 111,121.08
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Solution
The fourth proportional to 426,664.68, 640,034.28 and 111,121.08 is: 166,691.32
Step by Step Solution
- Step 1: Write the proportion equation
426,664.68 : 640,034.28 = 111,121.08 : x - Step 2: Convert to fraction form
426,664.68/640,034.28 = 111,121.08/x - Step 3: Cross multiply
426,664.68x = 640,034.28 × 111,121.08 - Step 4: Simplify right side
426,664.68x = 71,121,300,430.62 - Step 5: Solve for x
x = 71,121,300,430.62/426,664.68 - Step 6: Final answer
x = 166,691.32
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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.