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Finding the Fourth Proportional to 215,850.40, 323,775.60 and 120,983.20

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Solution

The fourth proportional to 215,850.40, 323,775.60 and 120,983.20 is: 181,474.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,850.40 : 323,775.60 = 120,983.20 : x
  2. Step 2: Convert to fraction form
    215,850.40/323,775.60 = 120,983.20/x
  3. Step 3: Cross multiply
    215,850.40x = 323,775.60 × 120,983.20
  4. Step 4: Simplify right side
    215,850.40x = 39,171,408,169.92
  5. Step 5: Solve for x
    x = 39,171,408,169.92/215,850.40
  6. Step 6: Final answer
    x = 181,474.80

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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.