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Finding the Fourth Proportional to 255,129.08, 352,121.27 and 147,764.38

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Solution

The fourth proportional to 255,129.08, 352,121.27 and 147,764.38 is: 203,939.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,129.08 : 352,121.27 = 147,764.38 : x
  2. Step 2: Convert to fraction form
    255,129.08/352,121.27 = 147,764.38/x
  3. Step 3: Cross multiply
    255,129.08x = 352,121.27 × 147,764.38
  4. Step 4: Simplify right side
    255,129.08x = 52,030,981,146.36
  5. Step 5: Solve for x
    x = 52,030,981,146.36/255,129.08
  6. Step 6: Final answer
    x = 203,939.83

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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.