Finding the Fourth Proportional to 326,287.13, 489,374.26 and 86,404.48
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Solution
The fourth proportional to 326,287.13, 489,374.26 and 86,404.48 is: 129,591.77
Step by Step Solution
- Step 1: Write the proportion equation
326,287.13 : 489,374.26 = 86,404.48 : x - Step 2: Convert to fraction form
326,287.13/489,374.26 = 86,404.48/x - Step 3: Cross multiply
326,287.13x = 489,374.26 × 86,404.48 - Step 4: Simplify right side
326,287.13x = 42,284,127,021.24 - Step 5: Solve for x
x = 42,284,127,021.24/326,287.13 - Step 6: Final answer
x = 129,591.77
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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.