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Finding the Fourth Proportional to 255,787.78, 383,716.68 and 87,262.86

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Solution

The fourth proportional to 255,787.78, 383,716.68 and 87,262.86 is: 130,906.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,787.78 : 383,716.68 = 87,262.86 : x
  2. Step 2: Convert to fraction form
    255,787.78/383,716.68 = 87,262.86/x
  3. Step 3: Cross multiply
    255,787.78x = 383,716.68 × 87,262.86
  4. Step 4: Simplify right side
    255,787.78x = 33,484,214,926.50
  5. Step 5: Solve for x
    x = 33,484,214,926.50/255,787.78
  6. Step 6: Final answer
    x = 130,906.23

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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.