Home / 255,947.07-383,976.65-78,467.92

Finding the Fourth Proportional to 255,947.07, 383,976.65 and 78,467.92

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Solution

The fourth proportional to 255,947.07, 383,976.65 and 78,467.92 is: 117,719.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,947.07 : 383,976.65 = 78,467.92 : x
  2. Step 2: Convert to fraction form
    255,947.07/383,976.65 = 78,467.92/x
  3. Step 3: Cross multiply
    255,947.07x = 383,976.65 × 78,467.92
  4. Step 4: Simplify right side
    255,947.07x = 30,129,850,450.16
  5. Step 5: Solve for x
    x = 30,129,850,450.16/255,947.07
  6. Step 6: Final answer
    x = 117,719.07

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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.