Home / 255,780.20-384,131.10-185,738.60

Finding the Fourth Proportional to 255,780.20, 384,131.10 and 185,738.60

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Solution

The fourth proportional to 255,780.20, 384,131.10 and 185,738.60 is: 278,942.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,780.20 : 384,131.10 = 185,738.60 : x
  2. Step 2: Convert to fraction form
    255,780.20/384,131.10 = 185,738.60/x
  3. Step 3: Cross multiply
    255,780.20x = 384,131.10 × 185,738.60
  4. Step 4: Simplify right side
    255,780.20x = 71,347,972,730.46
  5. Step 5: Solve for x
    x = 71,347,972,730.46/255,780.20
  6. Step 6: Final answer
    x = 278,942.52

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1.5x scale

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.