Finding the Fourth Proportional to 318,720.06, 477,905.10 and 218,905.38
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Solution
The fourth proportional to 318,720.06, 477,905.10 and 218,905.38 is: 328,237.88
Step by Step Solution
- Step 1: Write the proportion equation
318,720.06 : 477,905.10 = 218,905.38 : x - Step 2: Convert to fraction form
318,720.06/477,905.10 = 218,905.38/x - Step 3: Cross multiply
318,720.06x = 477,905.10 × 218,905.38 - Step 4: Simplify right side
318,720.06x = 104,615,997,519.44 - Step 5: Solve for x
x = 104,615,997,519.44/318,720.06 - Step 6: Final answer
x = 328,237.88
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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.