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Finding the Fourth Proportional to 214,778.76, 322,168.14 and 81,627.72

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Solution

The fourth proportional to 214,778.76, 322,168.14 and 81,627.72 is: 122,441.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,778.76 : 322,168.14 = 81,627.72 : x
  2. Step 2: Convert to fraction form
    214,778.76/322,168.14 = 81,627.72/x
  3. Step 3: Cross multiply
    214,778.76x = 322,168.14 × 81,627.72
  4. Step 4: Simplify right side
    214,778.76x = 26,297,850,724.84
  5. Step 5: Solve for x
    x = 26,297,850,724.84/214,778.76
  6. Step 6: Final answer
    x = 122,441.58

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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.