Home / 213,812.20-320,795.10-206,132.20

Finding the Fourth Proportional to 213,812.20, 320,795.10 and 206,132.20

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Solution

The fourth proportional to 213,812.20, 320,795.10 and 206,132.20 is: 309,272.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,812.20 : 320,795.10 = 206,132.20 : x
  2. Step 2: Convert to fraction form
    213,812.20/320,795.10 = 206,132.20/x
  3. Step 3: Cross multiply
    213,812.20x = 320,795.10 × 206,132.20
  4. Step 4: Simplify right side
    213,812.20x = 66,126,199,712.22
  5. Step 5: Solve for x
    x = 66,126,199,712.22/213,812.20
  6. Step 6: Final answer
    x = 309,272.34

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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.