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Finding the Fourth Proportional to 437,321.44, 655,983.60 and 137,830.24

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Solution

The fourth proportional to 437,321.44, 655,983.60 and 137,830.24 is: 206,745.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,321.44 : 655,983.60 = 137,830.24 : x
  2. Step 2: Convert to fraction form
    437,321.44/655,983.60 = 137,830.24/x
  3. Step 3: Cross multiply
    437,321.44x = 655,983.60 × 137,830.24
  4. Step 4: Simplify right side
    437,321.44x = 90,414,377,024.06
  5. Step 5: Solve for x
    x = 90,414,377,024.06/437,321.44
  6. Step 6: Final answer
    x = 206,745.81

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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.