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Finding the Fourth Proportional to 255,128.58, 352,120.58 and 147,763.88

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Solution

The fourth proportional to 255,128.58, 352,120.58 and 147,763.88 is: 203,939.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,128.58 : 352,120.58 = 147,763.88 : x
  2. Step 2: Convert to fraction form
    255,128.58/352,120.58 = 147,763.88/x
  3. Step 3: Cross multiply
    255,128.58x = 352,120.58 × 147,763.88
  4. Step 4: Simplify right side
    255,128.58x = 52,030,703,128.65
  5. Step 5: Solve for x
    x = 52,030,703,128.65/255,128.58
  6. Step 6: Final answer
    x = 203,939.14

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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.