Home / 213,977.60-320,844.90-80,862.20

Finding the Fourth Proportional to 213,977.60, 320,844.90 and 80,862.20

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Solution

The fourth proportional to 213,977.60, 320,844.90 and 80,862.20 is: 121,247.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,977.60 : 320,844.90 = 80,862.20 : x
  2. Step 2: Convert to fraction form
    213,977.60/320,844.90 = 80,862.20/x
  3. Step 3: Cross multiply
    213,977.60x = 320,844.90 × 80,862.20
  4. Step 4: Simplify right side
    213,977.60x = 25,944,224,472.78
  5. Step 5: Solve for x
    x = 25,944,224,472.78/213,977.60
  6. Step 6: Final answer
    x = 121,247.39

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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.