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Finding the Fourth Proportional to 255,982.87, 383,930.55 and 68,950.63

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Solution

The fourth proportional to 255,982.87, 383,930.55 and 68,950.63 is: 103,414.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,982.87 : 383,930.55 = 68,950.63 : x
  2. Step 2: Convert to fraction form
    255,982.87/383,930.55 = 68,950.63/x
  3. Step 3: Cross multiply
    255,982.87x = 383,930.55 × 68,950.63
  4. Step 4: Simplify right side
    255,982.87x = 26,472,253,298.75
  5. Step 5: Solve for x
    x = 26,472,253,298.75/255,982.87
  6. Step 6: Final answer
    x = 103,414.16

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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.