Finding the Fourth Proportional to 326,445.67, 489,573.55 and 136,900.99
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Solution
The fourth proportional to 326,445.67, 489,573.55 and 136,900.99 is: 205,311.66
Step by Step Solution
- Step 1: Write the proportion equation
326,445.67 : 489,573.55 = 136,900.99 : x - Step 2: Convert to fraction form
326,445.67/489,573.55 = 136,900.99/x - Step 3: Cross multiply
326,445.67x = 489,573.55 × 136,900.99 - Step 4: Simplify right side
326,445.67x = 67,023,103,672.81 - Step 5: Solve for x
x = 67,023,103,672.81/326,445.67 - Step 6: Final answer
x = 205,311.66
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1.5x scale
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.