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Finding the Fourth Proportional to 255,606.12, 383,430.78 and 68,627.88

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Solution

The fourth proportional to 255,606.12, 383,430.78 and 68,627.88 is: 102,947.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,606.12 : 383,430.78 = 68,627.88 : x
  2. Step 2: Convert to fraction form
    255,606.12/383,430.78 = 68,627.88/x
  3. Step 3: Cross multiply
    255,606.12x = 383,430.78 × 68,627.88
  4. Step 4: Simplify right side
    255,606.12x = 26,314,041,558.15
  5. Step 5: Solve for x
    x = 26,314,041,558.15/255,606.12
  6. Step 6: Final answer
    x = 102,947.62

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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.