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Finding the Fourth Proportional to 255,462.30, 383,429.97 and 129,191.94

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Solution

The fourth proportional to 255,462.30, 383,429.97 and 129,191.94 is: 193,907.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,462.30 : 383,429.97 = 129,191.94 : x
  2. Step 2: Convert to fraction form
    255,462.30/383,429.97 = 129,191.94/x
  3. Step 3: Cross multiply
    255,462.30x = 383,429.97 × 129,191.94
  4. Step 4: Simplify right side
    255,462.30x = 49,536,061,678.44
  5. Step 5: Solve for x
    x = 49,536,061,678.44/255,462.30
  6. Step 6: Final answer
    x = 193,907.52

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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.