Finding the Fourth Proportional to 436,478.74, 654,745.79 and 136,971.14
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Solution
The fourth proportional to 436,478.74, 654,745.79 and 136,971.14 is: 205,465.39
Step by Step Solution
- Step 1: Write the proportion equation
436,478.74 : 654,745.79 = 136,971.14 : x - Step 2: Convert to fraction form
436,478.74/654,745.79 = 136,971.14/x - Step 3: Cross multiply
436,478.74x = 654,745.79 × 136,971.14 - Step 4: Simplify right side
436,478.74x = 89,681,274,335.20 - Step 5: Solve for x
x = 89,681,274,335.20/436,478.74 - Step 6: Final answer
x = 205,465.39
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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.