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Finding the Fourth Proportional to 246,406.30, 340,040.60 and 138,976.10

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Solution

The fourth proportional to 246,406.30, 340,040.60 and 138,976.10 is: 191,786.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,406.30 : 340,040.60 = 138,976.10 : x
  2. Step 2: Convert to fraction form
    246,406.30/340,040.60 = 138,976.10/x
  3. Step 3: Cross multiply
    246,406.30x = 340,040.60 × 138,976.10
  4. Step 4: Simplify right side
    246,406.30x = 47,257,516,429.66
  5. Step 5: Solve for x
    x = 47,257,516,429.66/246,406.30
  6. Step 6: Final answer
    x = 191,786.96

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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.