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Finding the Fourth Proportional to 256,002.39, 383,786.69 and 106,149.15

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Solution

The fourth proportional to 256,002.39, 383,786.69 and 106,149.15 is: 159,133.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,002.39 : 383,786.69 = 106,149.15 : x
  2. Step 2: Convert to fraction form
    256,002.39/383,786.69 = 106,149.15/x
  3. Step 3: Cross multiply
    256,002.39x = 383,786.69 × 106,149.15
  4. Step 4: Simplify right side
    256,002.39x = 40,738,630,394.07
  5. Step 5: Solve for x
    x = 40,738,630,394.07/256,002.39
  6. Step 6: Final answer
    x = 159,133.79

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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.