Finding the Fourth Proportional to 338,422.26, 507,634.56 and 85,702.68
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Solution
The fourth proportional to 338,422.26, 507,634.56 and 85,702.68 is: 128,554.32
Step by Step Solution
- Step 1: Write the proportion equation
338,422.26 : 507,634.56 = 85,702.68 : x - Step 2: Convert to fraction form
338,422.26/507,634.56 = 85,702.68/x - Step 3: Cross multiply
338,422.26x = 507,634.56 × 85,702.68 - Step 4: Simplify right side
338,422.26x = 43,505,642,252.62 - Step 5: Solve for x
x = 43,505,642,252.62/338,422.26 - Step 6: Final answer
x = 128,554.32
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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.