Home / 255,981.62-383,928.68-68,949.38

Finding the Fourth Proportional to 255,981.62, 383,928.68 and 68,949.38

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Solution

The fourth proportional to 255,981.62, 383,928.68 and 68,949.38 is: 103,412.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,981.62 : 383,928.68 = 68,949.38 : x
  2. Step 2: Convert to fraction form
    255,981.62/383,928.68 = 68,949.38/x
  3. Step 3: Cross multiply
    255,981.62x = 383,928.68 × 68,949.38
  4. Step 4: Simplify right side
    255,981.62x = 26,471,642,185.83
  5. Step 5: Solve for x
    x = 26,471,642,185.83/255,981.62
  6. Step 6: Final answer
    x = 103,412.28

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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.