Finding the Fourth Proportional to 326,403.36, 489,654.36 and 115,991.28
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Solution
The fourth proportional to 326,403.36, 489,654.36 and 115,991.28 is: 174,004.45
Step by Step Solution
- Step 1: Write the proportion equation
326,403.36 : 489,654.36 = 115,991.28 : x - Step 2: Convert to fraction form
326,403.36/489,654.36 = 115,991.28/x - Step 3: Cross multiply
326,403.36x = 489,654.36 × 115,991.28 - Step 4: Simplify right side
326,403.36x = 56,795,635,973.98 - Step 5: Solve for x
x = 56,795,635,973.98/326,403.36 - Step 6: Final answer
x = 174,004.45
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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.