Home / 419,348.34-628,944.75-138,829.14

Finding the Fourth Proportional to 419,348.34, 628,944.75 and 138,829.14

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Solution

The fourth proportional to 419,348.34, 628,944.75 and 138,829.14 is: 208,217.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,348.34 : 628,944.75 = 138,829.14 : x
  2. Step 2: Convert to fraction form
    419,348.34/628,944.75 = 138,829.14/x
  3. Step 3: Cross multiply
    419,348.34x = 628,944.75 × 138,829.14
  4. Step 4: Simplify right side
    419,348.34x = 87,315,858,750.02
  5. Step 5: Solve for x
    x = 87,315,858,750.02/419,348.34
  6. Step 6: Final answer
    x = 208,217.97

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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.