Home / 283,126.22-390,704.39-155,789.90

Finding the Fourth Proportional to 283,126.22, 390,704.39 and 155,789.90

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Solution

The fourth proportional to 283,126.22, 390,704.39 and 155,789.90 is: 214,984.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,126.22 : 390,704.39 = 155,789.90 : x
  2. Step 2: Convert to fraction form
    283,126.22/390,704.39 = 155,789.90/x
  3. Step 3: Cross multiply
    283,126.22x = 390,704.39 × 155,789.90
  4. Step 4: Simplify right side
    283,126.22x = 60,867,797,847.66
  5. Step 5: Solve for x
    x = 60,867,797,847.66/283,126.22
  6. Step 6: Final answer
    x = 214,984.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.