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Finding the Fourth Proportional to 285,917.76, 428,674.56 and 125,917.44

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Solution

The fourth proportional to 285,917.76, 428,674.56 and 125,917.44 is: 188,787.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,917.76 : 428,674.56 = 125,917.44 : x
  2. Step 2: Convert to fraction form
    285,917.76/428,674.56 = 125,917.44/x
  3. Step 3: Cross multiply
    285,917.76x = 428,674.56 × 125,917.44
  4. Step 4: Simplify right side
    285,917.76x = 53,977,603,188.33
  5. Step 5: Solve for x
    x = 53,977,603,188.33/285,917.76
  6. Step 6: Final answer
    x = 188,787.16

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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.