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Finding the Fourth Proportional to 269,429.10, 404,143.65 and 69,747.90

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Solution

The fourth proportional to 269,429.10, 404,143.65 and 69,747.90 is: 104,621.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,429.10 : 404,143.65 = 69,747.90 : x
  2. Step 2: Convert to fraction form
    269,429.10/404,143.65 = 69,747.90/x
  3. Step 3: Cross multiply
    269,429.10x = 404,143.65 × 69,747.90
  4. Step 4: Simplify right side
    269,429.10x = 28,188,170,885.84
  5. Step 5: Solve for x
    x = 28,188,170,885.84/269,429.10
  6. Step 6: Final answer
    x = 104,621.85

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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.