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Finding the Fourth Proportional to 391,455.90, 587,183.85 and 110,975.58

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Solution

The fourth proportional to 391,455.90, 587,183.85 and 110,975.58 is: 166,463.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,455.90 : 587,183.85 = 110,975.58 : x
  2. Step 2: Convert to fraction form
    391,455.90/587,183.85 = 110,975.58/x
  3. Step 3: Cross multiply
    391,455.90x = 587,183.85 × 110,975.58
  4. Step 4: Simplify right side
    391,455.90x = 65,163,068,320.38
  5. Step 5: Solve for x
    x = 65,163,068,320.38/391,455.90
  6. Step 6: Final answer
    x = 166,463.37

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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.