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Finding the Fourth Proportional to 397,272.40, 595,908.60 and 239,419.60

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Solution

The fourth proportional to 397,272.40, 595,908.60 and 239,419.60 is: 359,129.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,272.40 : 595,908.60 = 239,419.60 : x
  2. Step 2: Convert to fraction form
    397,272.40/595,908.60 = 239,419.60/x
  3. Step 3: Cross multiply
    397,272.40x = 595,908.60 × 239,419.60
  4. Step 4: Simplify right side
    397,272.40x = 142,672,198,648.56
  5. Step 5: Solve for x
    x = 142,672,198,648.56/397,272.40
  6. Step 6: Final answer
    x = 359,129.40

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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.