Finding the Fourth Proportional to 317,707.35, 476,455.20 and 128,118.75
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Solution
The fourth proportional to 317,707.35, 476,455.20 and 128,118.75 is: 192,135.45
Step by Step Solution
- Step 1: Write the proportion equation
317,707.35 : 476,455.20 = 128,118.75 : x - Step 2: Convert to fraction form
317,707.35/476,455.20 = 128,118.75/x - Step 3: Cross multiply
317,707.35x = 476,455.20 × 128,118.75 - Step 4: Simplify right side
317,707.35x = 61,042,844,655 - Step 5: Solve for x
x = 61,042,844,655/317,707.35 - Step 6: Final answer
x = 192,135.45
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1.5x scale
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.