Finding the Fourth Proportional to 326,609.79, 489,788.72 and 126,903.88
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Solution
The fourth proportional to 326,609.79, 489,788.72 and 126,903.88 is: 190,306.88
Step by Step Solution
- Step 1: Write the proportion equation
326,609.79 : 489,788.72 = 126,903.88 : x - Step 2: Convert to fraction form
326,609.79/489,788.72 = 126,903.88/x - Step 3: Cross multiply
326,609.79x = 489,788.72 × 126,903.88 - Step 4: Simplify right side
326,609.79x = 62,156,088,948.23 - Step 5: Solve for x
x = 62,156,088,948.23/326,609.79 - Step 6: Final answer
x = 190,306.88
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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.