Finding the Fourth Proportional to 420,880.86, 580,765.14 and 239,593.14
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Solution
The fourth proportional to 420,880.86, 580,765.14 and 239,593.14 is: 330,609.82
Step by Step Solution
- Step 1: Write the proportion equation
420,880.86 : 580,765.14 = 239,593.14 : x - Step 2: Convert to fraction form
420,880.86/580,765.14 = 239,593.14/x - Step 3: Cross multiply
420,880.86x = 580,765.14 × 239,593.14 - Step 4: Simplify right side
420,880.86x = 139,147,343,495.14 - Step 5: Solve for x
x = 139,147,343,495.14/420,880.86 - Step 6: Final answer
x = 330,609.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.