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Finding the Fourth Proportional to 275,967.75, 380,835.87 and 156,735.75

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Solution

The fourth proportional to 275,967.75, 380,835.87 and 156,735.75 is: 216,295.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,967.75 : 380,835.87 = 156,735.75 : x
  2. Step 2: Convert to fraction form
    275,967.75/380,835.87 = 156,735.75/x
  3. Step 3: Cross multiply
    275,967.75x = 380,835.87 × 156,735.75
  4. Step 4: Simplify right side
    275,967.75x = 59,690,595,711.35
  5. Step 5: Solve for x
    x = 59,690,595,711.35/275,967.75
  6. Step 6: Final answer
    x = 216,295.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.