Home / 320,860.32-481,289.16-80,974.76

Finding the Fourth Proportional to 320,860.32, 481,289.16 and 80,974.76

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Solution

The fourth proportional to 320,860.32, 481,289.16 and 80,974.76 is: 121,461.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,860.32 : 481,289.16 = 80,974.76 : x
  2. Step 2: Convert to fraction form
    320,860.32/481,289.16 = 80,974.76/x
  3. Step 3: Cross multiply
    320,860.32x = 481,289.16 × 80,974.76
  4. Step 4: Simplify right side
    320,860.32x = 38,972,274,221.60
  5. Step 5: Solve for x
    x = 38,972,274,221.60/320,860.32
  6. Step 6: Final answer
    x = 121,461.81

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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.