Finding the Fourth Proportional to 320,615.10, 480,289.05 and 281,216.70
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Solution
The fourth proportional to 320,615.10, 480,289.05 and 281,216.70 is: 421,269.31
Step by Step Solution
- Step 1: Write the proportion equation
320,615.10 : 480,289.05 = 281,216.70 : x - Step 2: Convert to fraction form
320,615.10/480,289.05 = 281,216.70/x - Step 3: Cross multiply
320,615.10x = 480,289.05 × 281,216.70 - Step 4: Simplify right side
320,615.10x = 135,065,301,687.14 - Step 5: Solve for x
x = 135,065,301,687.14/320,615.10 - Step 6: Final answer
x = 421,269.31
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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.