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Finding the Fourth Proportional to 255,627.29, 383,443.38 and 68,638.79

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Solution

The fourth proportional to 255,627.29, 383,443.38 and 68,638.79 is: 102,958.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,627.29 : 383,443.38 = 68,638.79 : x
  2. Step 2: Convert to fraction form
    255,627.29/383,443.38 = 68,638.79/x
  3. Step 3: Cross multiply
    255,627.29x = 383,443.38 × 68,638.79
  4. Step 4: Simplify right side
    255,627.29x = 26,319,089,293.52
  5. Step 5: Solve for x
    x = 26,319,089,293.52/255,627.29
  6. Step 6: Final answer
    x = 102,958.84

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1.5x scale

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.