Finding the Fourth Proportional to 313,660.80, 470,491.20 and 113,987.70
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Solution
The fourth proportional to 313,660.80, 470,491.20 and 113,987.70 is: 170,981.55
Step by Step Solution
- Step 1: Write the proportion equation
313,660.80 : 470,491.20 = 113,987.70 : x - Step 2: Convert to fraction form
313,660.80/470,491.20 = 113,987.70/x - Step 3: Cross multiply
313,660.80x = 470,491.20 × 113,987.70 - Step 4: Simplify right side
313,660.80x = 53,630,209,758.24 - Step 5: Solve for x
x = 53,630,209,758.24/313,660.80 - Step 6: Final answer
x = 170,981.55
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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.