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Finding the Fourth Proportional to 201,358.10, 301,691.55 and 131,201.30

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Solution

The fourth proportional to 201,358.10, 301,691.55 and 131,201.30 is: 196,576.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,358.10 : 301,691.55 = 131,201.30 : x
  2. Step 2: Convert to fraction form
    201,358.10/301,691.55 = 131,201.30/x
  3. Step 3: Cross multiply
    201,358.10x = 301,691.55 × 131,201.30
  4. Step 4: Simplify right side
    201,358.10x = 39,582,323,559.02
  5. Step 5: Solve for x
    x = 39,582,323,559.02/201,358.10
  6. Step 6: Final answer
    x = 196,576.76

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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.