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Finding the Fourth Proportional to 255,984.54, 383,962.44 and 78,491.07

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Solution

The fourth proportional to 255,984.54, 383,962.44 and 78,491.07 is: 117,732.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,984.54 : 383,962.44 = 78,491.07 : x
  2. Step 2: Convert to fraction form
    255,984.54/383,962.44 = 78,491.07/x
  3. Step 3: Cross multiply
    255,984.54x = 383,962.44 × 78,491.07
  4. Step 4: Simplify right side
    255,984.54x = 30,137,622,755.41
  5. Step 5: Solve for x
    x = 30,137,622,755.41/255,984.54
  6. Step 6: Final answer
    x = 117,732.20

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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.