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Finding the Fourth Proportional to 270,469.70, 405,704.55 and 83,480.90

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Solution

The fourth proportional to 270,469.70, 405,704.55 and 83,480.90 is: 125,221.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,469.70 : 405,704.55 = 83,480.90 : x
  2. Step 2: Convert to fraction form
    270,469.70/405,704.55 = 83,480.90/x
  3. Step 3: Cross multiply
    270,469.70x = 405,704.55 × 83,480.90
  4. Step 4: Simplify right side
    270,469.70x = 33,868,580,968.10
  5. Step 5: Solve for x
    x = 33,868,580,968.10/270,469.70
  6. Step 6: Final answer
    x = 125,221.35

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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.