Finding the Fourth Proportional to 326,115.40, 489,173.10 and 236,885.80
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Solution
The fourth proportional to 326,115.40, 489,173.10 and 236,885.80 is: 355,328.70
Step by Step Solution
- Step 1: Write the proportion equation
326,115.40 : 489,173.10 = 236,885.80 : x - Step 2: Convert to fraction form
326,115.40/489,173.10 = 236,885.80/x - Step 3: Cross multiply
326,115.40x = 489,173.10 × 236,885.80 - Step 4: Simplify right side
326,115.40x = 115,878,161,131.98 - Step 5: Solve for x
x = 115,878,161,131.98/326,115.40 - Step 6: Final answer
x = 355,328.70
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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.