Home / 213,828.60-320,742.90-143,326.20

Finding the Fourth Proportional to 213,828.60, 320,742.90 and 143,326.20

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Solution

The fourth proportional to 213,828.60, 320,742.90 and 143,326.20 is: 214,989.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,828.60 : 320,742.90 = 143,326.20 : x
  2. Step 2: Convert to fraction form
    213,828.60/320,742.90 = 143,326.20/x
  3. Step 3: Cross multiply
    213,828.60x = 320,742.90 × 143,326.20
  4. Step 4: Simplify right side
    213,828.60x = 45,970,861,033.98
  5. Step 5: Solve for x
    x = 45,970,861,033.98/213,828.60
  6. Step 6: Final answer
    x = 214,989.30

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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.