Finding the Fourth Proportional to 313,762.36, 470,639.46 and 77,107.12
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Solution
The fourth proportional to 313,762.36, 470,639.46 and 77,107.12 is: 115,659.68
Step by Step Solution
- Step 1: Write the proportion equation
313,762.36 : 470,639.46 = 77,107.12 : x - Step 2: Convert to fraction form
313,762.36/470,639.46 = 77,107.12/x - Step 3: Cross multiply
313,762.36x = 470,639.46 × 77,107.12 - Step 4: Simplify right side
313,762.36x = 36,289,653,318.96 - Step 5: Solve for x
x = 36,289,653,318.96/313,762.36 - Step 6: Final answer
x = 115,659.68
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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.