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Finding the Fourth Proportional to 255,441.78, 383,162.67 and 77,949.72

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Solution

The fourth proportional to 255,441.78, 383,162.67 and 77,949.72 is: 116,924.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,441.78 : 383,162.67 = 77,949.72 : x
  2. Step 2: Convert to fraction form
    255,441.78/383,162.67 = 77,949.72/x
  3. Step 3: Cross multiply
    255,441.78x = 383,162.67 × 77,949.72
  4. Step 4: Simplify right side
    255,441.78x = 29,867,422,840.95
  5. Step 5: Solve for x
    x = 29,867,422,840.95/255,441.78
  6. Step 6: Final answer
    x = 116,924.58

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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.