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Finding the Fourth Proportional to 255,815.52, 383,664.96 and 68,841.60

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Solution

The fourth proportional to 255,815.52, 383,664.96 and 68,841.60 is: 103,246.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,815.52 : 383,664.96 = 68,841.60 : x
  2. Step 2: Convert to fraction form
    255,815.52/383,664.96 = 68,841.60/x
  3. Step 3: Cross multiply
    255,815.52x = 383,664.96 × 68,841.60
  4. Step 4: Simplify right side
    255,815.52x = 26,412,109,710.34
  5. Step 5: Solve for x
    x = 26,412,109,710.34/255,815.52
  6. Step 6: Final answer
    x = 103,246.71

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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.