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Finding the Fourth Proportional to 219,881.40, 329,627.70 and 131,040.60

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Solution

The fourth proportional to 219,881.40, 329,627.70 and 131,040.60 is: 196,445.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,881.40 : 329,627.70 = 131,040.60 : x
  2. Step 2: Convert to fraction form
    219,881.40/329,627.70 = 131,040.60/x
  3. Step 3: Cross multiply
    219,881.40x = 329,627.70 × 131,040.60
  4. Step 4: Simplify right side
    219,881.40x = 43,194,611,584.62
  5. Step 5: Solve for x
    x = 43,194,611,584.62/219,881.40
  6. Step 6: Final answer
    x = 196,445.05

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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.