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Finding the Fourth Proportional to 255,984.12, 383,932.42 and 68,951.88

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Solution

The fourth proportional to 255,984.12, 383,932.42 and 68,951.88 is: 103,416.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,984.12 : 383,932.42 = 68,951.88 : x
  2. Step 2: Convert to fraction form
    255,984.12/383,932.42 = 68,951.88/x
  3. Step 3: Cross multiply
    255,984.12x = 383,932.42 × 68,951.88
  4. Step 4: Simplify right side
    255,984.12x = 26,472,862,151.95
  5. Step 5: Solve for x
    x = 26,472,862,151.95/255,984.12
  6. Step 6: Final answer
    x = 103,416.03

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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.