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Finding the Fourth Proportional to 260,801.87, 391,202.78 and 142,408.62

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Solution

The fourth proportional to 260,801.87, 391,202.78 and 142,408.62 is: 213,612.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,801.87 : 391,202.78 = 142,408.62 : x
  2. Step 2: Convert to fraction form
    260,801.87/391,202.78 = 142,408.62/x
  3. Step 3: Cross multiply
    260,801.87x = 391,202.78 × 142,408.62
  4. Step 4: Simplify right side
    260,801.87x = 55,710,647,327.92
  5. Step 5: Solve for x
    x = 55,710,647,327.92/260,801.87
  6. Step 6: Final answer
    x = 213,612.92

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1.5x scale

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.