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Finding the Fourth Proportional to 255,765.51, 383,758.83 and 137,298.51

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Solution

The fourth proportional to 255,765.51, 383,758.83 and 137,298.51 is: 206,007.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,765.51 : 383,758.83 = 137,298.51 : x
  2. Step 2: Convert to fraction form
    255,765.51/383,758.83 = 137,298.51/x
  3. Step 3: Cross multiply
    255,765.51x = 383,758.83 × 137,298.51
  4. Step 4: Simplify right side
    255,765.51x = 52,689,515,558.34
  5. Step 5: Solve for x
    x = 52,689,515,558.34/255,765.51
  6. Step 6: Final answer
    x = 206,007.12

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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.