Finding the Fourth Proportional to 413,503.21, 620,379.33 and 129,182.28
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Solution
The fourth proportional to 413,503.21, 620,379.33 and 129,182.28 is: 193,812.32
Step by Step Solution
- Step 1: Write the proportion equation
413,503.21 : 620,379.33 = 129,182.28 : x - Step 2: Convert to fraction form
413,503.21/620,379.33 = 129,182.28/x - Step 3: Cross multiply
413,503.21x = 620,379.33 × 129,182.28 - Step 4: Simplify right side
413,503.21x = 80,142,016,314.27 - Step 5: Solve for x
x = 80,142,016,314.27/413,503.21 - Step 6: Final answer
x = 193,812.32
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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.