Finding the Fourth Proportional to 405,949.11, 609,000.21 and 125,400.75
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Solution
The fourth proportional to 405,949.11, 609,000.21 and 125,400.75 is: 188,124.77
Step by Step Solution
- Step 1: Write the proportion equation
405,949.11 : 609,000.21 = 125,400.75 : x - Step 2: Convert to fraction form
405,949.11/609,000.21 = 125,400.75/x - Step 3: Cross multiply
405,949.11x = 609,000.21 × 125,400.75 - Step 4: Simplify right side
405,949.11x = 76,369,083,084.16 - Step 5: Solve for x
x = 76,369,083,084.16/405,949.11 - Step 6: Final answer
x = 188,124.77
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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.