Home / 255,714.92-383,615.52-78,180.36

Finding the Fourth Proportional to 255,714.92, 383,615.52 and 78,180.36

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Solution

The fourth proportional to 255,714.92, 383,615.52 and 78,180.36 is: 117,283.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,714.92 : 383,615.52 = 78,180.36 : x
  2. Step 2: Convert to fraction form
    255,714.92/383,615.52 = 78,180.36/x
  3. Step 3: Cross multiply
    255,714.92x = 383,615.52 × 78,180.36
  4. Step 4: Simplify right side
    255,714.92x = 29,991,199,455.19
  5. Step 5: Solve for x
    x = 29,991,199,455.19/255,714.92
  6. Step 6: Final answer
    x = 117,283.73

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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.