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Finding the Fourth Proportional to 354,272.40, 531,408.60 and 132,627.60

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Solution

The fourth proportional to 354,272.40, 531,408.60 and 132,627.60 is: 198,941.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,272.40 : 531,408.60 = 132,627.60 : x
  2. Step 2: Convert to fraction form
    354,272.40/531,408.60 = 132,627.60/x
  3. Step 3: Cross multiply
    354,272.40x = 531,408.60 × 132,627.60
  4. Step 4: Simplify right side
    354,272.40x = 70,479,447,237.36
  5. Step 5: Solve for x
    x = 70,479,447,237.36/354,272.40
  6. Step 6: Final answer
    x = 198,941.40

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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.