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Finding the Fourth Proportional to 455,167.80, 682,751.70 and 313,450.20

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Solution

The fourth proportional to 455,167.80, 682,751.70 and 313,450.20 is: 470,175.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,167.80 : 682,751.70 = 313,450.20 : x
  2. Step 2: Convert to fraction form
    455,167.80/682,751.70 = 313,450.20/x
  3. Step 3: Cross multiply
    455,167.80x = 682,751.70 × 313,450.20
  4. Step 4: Simplify right side
    455,167.80x = 214,008,656,915.34
  5. Step 5: Solve for x
    x = 214,008,656,915.34/455,167.80
  6. Step 6: Final answer
    x = 470,175.30

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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.