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Finding the Fourth Proportional to 331,138.60, 496,913.10 and 173,480.20

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Solution

The fourth proportional to 331,138.60, 496,913.10 and 173,480.20 is: 260,327.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,138.60 : 496,913.10 = 173,480.20 : x
  2. Step 2: Convert to fraction form
    331,138.60/496,913.10 = 173,480.20/x
  3. Step 3: Cross multiply
    331,138.60x = 496,913.10 × 173,480.20
  4. Step 4: Simplify right side
    331,138.60x = 86,204,583,970.62
  5. Step 5: Solve for x
    x = 86,204,583,970.62/331,138.60
  6. Step 6: Final answer
    x = 260,327.80

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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.