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Finding the Fourth Proportional to 267,903.70, 401,709.55 and 80,890.90

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Solution

The fourth proportional to 267,903.70, 401,709.55 and 80,890.90 is: 121,292.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,903.70 : 401,709.55 = 80,890.90 : x
  2. Step 2: Convert to fraction form
    267,903.70/401,709.55 = 80,890.90/x
  3. Step 3: Cross multiply
    267,903.70x = 401,709.55 × 80,890.90
  4. Step 4: Simplify right side
    267,903.70x = 32,494,647,038.10
  5. Step 5: Solve for x
    x = 32,494,647,038.10/267,903.70
  6. Step 6: Final answer
    x = 121,292.27

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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.