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Finding the Fourth Proportional to 255,672.33, 383,508.53 and 78,179.35

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Solution

The fourth proportional to 255,672.33, 383,508.53 and 78,179.35 is: 117,269.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,672.33 : 383,508.53 = 78,179.35 : x
  2. Step 2: Convert to fraction form
    255,672.33/383,508.53 = 78,179.35/x
  3. Step 3: Cross multiply
    255,672.33x = 383,508.53 × 78,179.35
  4. Step 4: Simplify right side
    255,672.33x = 29,982,445,286.42
  5. Step 5: Solve for x
    x = 29,982,445,286.42/255,672.33
  6. Step 6: Final answer
    x = 117,269.03

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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.