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Finding the Fourth Proportional to 255,640.56, 352,767.85 and 140,912.88

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Solution

The fourth proportional to 255,640.56, 352,767.85 and 140,912.88 is: 194,450.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,640.56 : 352,767.85 = 140,912.88 : x
  2. Step 2: Convert to fraction form
    255,640.56/352,767.85 = 140,912.88/x
  3. Step 3: Cross multiply
    255,640.56x = 352,767.85 × 140,912.88
  4. Step 4: Simplify right side
    255,640.56x = 49,709,533,714.91
  5. Step 5: Solve for x
    x = 49,709,533,714.91/255,640.56
  6. Step 6: Final answer
    x = 194,450.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.