Finding the Fourth Proportional to 454,987.80, 682,481.70 and 139,403.70
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Solution
The fourth proportional to 454,987.80, 682,481.70 and 139,403.70 is: 209,105.55
Step by Step Solution
- Step 1: Write the proportion equation
454,987.80 : 682,481.70 = 139,403.70 : x - Step 2: Convert to fraction form
454,987.80/682,481.70 = 139,403.70/x - Step 3: Cross multiply
454,987.80x = 682,481.70 × 139,403.70 - Step 4: Simplify right side
454,987.80x = 95,140,474,162.29 - Step 5: Solve for x
x = 95,140,474,162.29/454,987.80 - Step 6: Final answer
x = 209,105.55
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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.