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Finding the Fourth Proportional to 255,446.40, 383,169.60 and 166,972.80

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Solution

The fourth proportional to 255,446.40, 383,169.60 and 166,972.80 is: 250,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,446.40 : 383,169.60 = 166,972.80 : x
  2. Step 2: Convert to fraction form
    255,446.40/383,169.60 = 166,972.80/x
  3. Step 3: Cross multiply
    255,446.40x = 383,169.60 × 166,972.80
  4. Step 4: Simplify right side
    255,446.40x = 63,978,900,986.88
  5. Step 5: Solve for x
    x = 63,978,900,986.88/255,446.40
  6. Step 6: Final answer
    x = 250,459.20

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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.