Home / 255,935.09-383,976.41-78,468.27

Finding the Fourth Proportional to 255,935.09, 383,976.41 and 78,468.27

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Solution

The fourth proportional to 255,935.09, 383,976.41 and 78,468.27 is: 117,725.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,935.09 : 383,976.41 = 78,468.27 : x
  2. Step 2: Convert to fraction form
    255,935.09/383,976.41 = 78,468.27/x
  3. Step 3: Cross multiply
    255,935.09x = 383,976.41 × 78,468.27
  4. Step 4: Simplify right side
    255,935.09x = 30,129,964,221.17
  5. Step 5: Solve for x
    x = 30,129,964,221.17/255,935.09
  6. Step 6: Final answer
    x = 117,725.02

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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.