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Finding the Fourth Proportional to 419,170.63, 628,749.72 and 103,627.45

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Solution

The fourth proportional to 419,170.63, 628,749.72 and 103,627.45 is: 155,439.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,170.63 : 628,749.72 = 103,627.45 : x
  2. Step 2: Convert to fraction form
    419,170.63/628,749.72 = 103,627.45/x
  3. Step 3: Cross multiply
    419,170.63x = 628,749.72 × 103,627.45
  4. Step 4: Simplify right side
    419,170.63x = 65,155,730,171.81
  5. Step 5: Solve for x
    x = 65,155,730,171.81/419,170.63
  6. Step 6: Final answer
    x = 155,439.64

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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.