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Finding the Fourth Proportional to 400,395.92, 552,546.41 and 219,107.88

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Solution

The fourth proportional to 400,395.92, 552,546.41 and 219,107.88 is: 302,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,395.92 : 552,546.41 = 219,107.88 : x
  2. Step 2: Convert to fraction form
    400,395.92/552,546.41 = 219,107.88/x
  3. Step 3: Cross multiply
    400,395.92x = 552,546.41 × 219,107.88
  4. Step 4: Simplify right side
    400,395.92x = 121,067,271,401.17
  5. Step 5: Solve for x
    x = 121,067,271,401.17/400,395.92
  6. Step 6: Final answer
    x = 302,368.90

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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.