Home / 255,310.17-383,022.12-77,831

Finding the Fourth Proportional to 255,310.17, 383,022.12 and 77,831

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Solution

The fourth proportional to 255,310.17, 383,022.12 and 77,831 is: 116,763.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,310.17 : 383,022.12 = 77,831 : x
  2. Step 2: Convert to fraction form
    255,310.17/383,022.12 = 77,831/x
  3. Step 3: Cross multiply
    255,310.17x = 383,022.12 × 77,831
  4. Step 4: Simplify right side
    255,310.17x = 29,810,994,232.57
  5. Step 5: Solve for x
    x = 29,810,994,232.57/255,310.17
  6. Step 6: Final answer
    x = 116,763.84

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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.