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Finding the Fourth Proportional to 398,419.25, 597,745.92 and 117,943.79

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Solution

The fourth proportional to 398,419.25, 597,745.92 and 117,943.79 is: 176,950.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,419.25 : 597,745.92 = 117,943.79 : x
  2. Step 2: Convert to fraction form
    398,419.25/597,745.92 = 117,943.79/x
  3. Step 3: Cross multiply
    398,419.25x = 597,745.92 × 117,943.79
  4. Step 4: Simplify right side
    398,419.25x = 70,500,419,261.84
  5. Step 5: Solve for x
    x = 70,500,419,261.84/398,419.25
  6. Step 6: Final answer
    x = 176,950.33

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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.