Finding the Fourth Proportional to 326,356.05, 489,557.79 and 136,625.60
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Solution
The fourth proportional to 326,356.05, 489,557.79 and 136,625.60 is: 204,948.33
Step by Step Solution
- Step 1: Write the proportion equation
326,356.05 : 489,557.79 = 136,625.60 : x - Step 2: Convert to fraction form
326,356.05/489,557.79 = 136,625.60/x - Step 3: Cross multiply
326,356.05x = 489,557.79 × 136,625.60 - Step 4: Simplify right side
326,356.05x = 66,886,128,017.32 - Step 5: Solve for x
x = 66,886,128,017.32/326,356.05 - Step 6: Final answer
x = 204,948.33
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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.