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Finding the Fourth Proportional to 255,645.84, 383,517.96 and 115,404.48

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Solution

The fourth proportional to 255,645.84, 383,517.96 and 115,404.48 is: 173,128.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,645.84 : 383,517.96 = 115,404.48 : x
  2. Step 2: Convert to fraction form
    255,645.84/383,517.96 = 115,404.48/x
  3. Step 3: Cross multiply
    255,645.84x = 383,517.96 × 115,404.48
  4. Step 4: Simplify right side
    255,645.84x = 44,259,690,744.46
  5. Step 5: Solve for x
    x = 44,259,690,744.46/255,645.84
  6. Step 6: Final answer
    x = 173,128.93

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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.