Home / 255,919.58-383,935.53-78,439.94

Finding the Fourth Proportional to 255,919.58, 383,935.53 and 78,439.94

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Solution

The fourth proportional to 255,919.58, 383,935.53 and 78,439.94 is: 117,677.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,919.58 : 383,935.53 = 78,439.94 : x
  2. Step 2: Convert to fraction form
    255,919.58/383,935.53 = 78,439.94/x
  3. Step 3: Cross multiply
    255,919.58x = 383,935.53 × 78,439.94
  4. Step 4: Simplify right side
    255,919.58x = 30,115,879,937.07
  5. Step 5: Solve for x
    x = 30,115,879,937.07/255,919.58
  6. Step 6: Final answer
    x = 117,677.12

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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.