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Finding the Fourth Proportional to 400,993.55, 553,370.92 and 239,886.44

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Solution

The fourth proportional to 400,993.55, 553,370.92 and 239,886.44 is: 331,043.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,993.55 : 553,370.92 = 239,886.44 : x
  2. Step 2: Convert to fraction form
    400,993.55/553,370.92 = 239,886.44/x
  3. Step 3: Cross multiply
    400,993.55x = 553,370.92 × 239,886.44
  4. Step 4: Simplify right side
    400,993.55x = 132,746,179,998.33
  5. Step 5: Solve for x
    x = 132,746,179,998.33/400,993.55
  6. Step 6: Final answer
    x = 331,043.18

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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.