Home / 380,469.11-570,741.42-140,645.85

Finding the Fourth Proportional to 380,469.11, 570,741.42 and 140,645.85

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Solution

The fourth proportional to 380,469.11, 570,741.42 and 140,645.85 is: 210,982.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,469.11 : 570,741.42 = 140,645.85 : x
  2. Step 2: Convert to fraction form
    380,469.11/570,741.42 = 140,645.85/x
  3. Step 3: Cross multiply
    380,469.11x = 570,741.42 × 140,645.85
  4. Step 4: Simplify right side
    380,469.11x = 80,272,412,146.11
  5. Step 5: Solve for x
    x = 80,272,412,146.11/380,469.11
  6. Step 6: Final answer
    x = 210,982.73

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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.