Home / 255,392.46-383,324.76-129,121.56

Finding the Fourth Proportional to 255,392.46, 383,324.76 and 129,121.56

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Solution

The fourth proportional to 255,392.46, 383,324.76 and 129,121.56 is: 193,801.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,392.46 : 383,324.76 = 129,121.56 : x
  2. Step 2: Convert to fraction form
    255,392.46/383,324.76 = 129,121.56/x
  3. Step 3: Cross multiply
    255,392.46x = 383,324.76 × 129,121.56
  4. Step 4: Simplify right side
    255,392.46x = 49,495,490,997.83
  5. Step 5: Solve for x
    x = 49,495,490,997.83/255,392.46
  6. Step 6: Final answer
    x = 193,801.69

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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.