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Finding the Fourth Proportional to 324,478.47, 486,183.95 and 111,128.73

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Solution

The fourth proportional to 324,478.47, 486,183.95 and 111,128.73 is: 166,510.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,478.47 : 486,183.95 = 111,128.73 : x
  2. Step 2: Convert to fraction form
    324,478.47/486,183.95 = 111,128.73/x
  3. Step 3: Cross multiply
    324,478.47x = 486,183.95 × 111,128.73
  4. Step 4: Simplify right side
    324,478.47x = 54,029,004,354.24
  5. Step 5: Solve for x
    x = 54,029,004,354.24/324,478.47
  6. Step 6: Final answer
    x = 166,510.29

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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.