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Finding the Fourth Proportional to 255,696.56, 383,638.35 and 118,984.86

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Solution

The fourth proportional to 255,696.56, 383,638.35 and 118,984.86 is: 178,520.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,696.56 : 383,638.35 = 118,984.86 : x
  2. Step 2: Convert to fraction form
    255,696.56/383,638.35 = 118,984.86/x
  3. Step 3: Cross multiply
    255,696.56x = 383,638.35 × 118,984.86
  4. Step 4: Simplify right side
    255,696.56x = 45,647,155,365.38
  5. Step 5: Solve for x
    x = 45,647,155,365.38/255,696.56
  6. Step 6: Final answer
    x = 178,520.81

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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.