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Finding the Fourth Proportional to 255,894.12, 383,841.18 and 131,155.56

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Solution

The fourth proportional to 255,894.12, 383,841.18 and 131,155.56 is: 196,733.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,894.12 : 383,841.18 = 131,155.56 : x
  2. Step 2: Convert to fraction form
    255,894.12/383,841.18 = 131,155.56/x
  3. Step 3: Cross multiply
    255,894.12x = 383,841.18 × 131,155.56
  4. Step 4: Simplify right side
    255,894.12x = 50,342,904,913.96
  5. Step 5: Solve for x
    x = 50,342,904,913.96/255,894.12
  6. Step 6: Final answer
    x = 196,733.34

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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.