Home / 398,723.82-597,910.14-145,938.60

Finding the Fourth Proportional to 398,723.82, 597,910.14 and 145,938.60

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Solution

The fourth proportional to 398,723.82, 597,910.14 and 145,938.60 is: 218,843.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,723.82 : 597,910.14 = 145,938.60 : x
  2. Step 2: Convert to fraction form
    398,723.82/597,910.14 = 145,938.60/x
  3. Step 3: Cross multiply
    398,723.82x = 597,910.14 × 145,938.60
  4. Step 4: Simplify right side
    398,723.82x = 87,258,168,757.40
  5. Step 5: Solve for x
    x = 87,258,168,757.40/398,723.82
  6. Step 6: Final answer
    x = 218,843.63

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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.