Finding the Fourth Proportional to 243,605.80, 365,408.70 and 138,629.80
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Solution
The fourth proportional to 243,605.80, 365,408.70 and 138,629.80 is: 207,944.70
Step by Step Solution
- Step 1: Write the proportion equation
243,605.80 : 365,408.70 = 138,629.80 : x - Step 2: Convert to fraction form
243,605.80/365,408.70 = 138,629.80/x - Step 3: Cross multiply
243,605.80x = 365,408.70 × 138,629.80 - Step 4: Simplify right side
243,605.80x = 50,656,534,999.26 - Step 5: Solve for x
x = 50,656,534,999.26/243,605.80 - Step 6: Final answer
x = 207,944.70
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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.