Finding the Fourth Proportional to 243,534.78, 365,338.62 and 85,735.44
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Solution
The fourth proportional to 243,534.78, 365,338.62 and 85,735.44 is: 128,615.99
Step by Step Solution
- Step 1: Write the proportion equation
243,534.78 : 365,338.62 = 85,735.44 : x - Step 2: Convert to fraction form
243,534.78/365,338.62 = 85,735.44/x - Step 3: Cross multiply
243,534.78x = 365,338.62 × 85,735.44 - Step 4: Simplify right side
243,534.78x = 31,322,467,334.69 - Step 5: Solve for x
x = 31,322,467,334.69/243,534.78 - Step 6: Final answer
x = 128,615.99
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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.