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Finding the Fourth Proportional to 245,481.24, 338,760.90 and 138,051.24

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Solution

The fourth proportional to 245,481.24, 338,760.90 and 138,051.24 is: 190,508.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,481.24 : 338,760.90 = 138,051.24 : x
  2. Step 2: Convert to fraction form
    245,481.24/338,760.90 = 138,051.24/x
  3. Step 3: Cross multiply
    245,481.24x = 338,760.90 × 138,051.24
  4. Step 4: Simplify right side
    245,481.24x = 46,766,362,308.52
  5. Step 5: Solve for x
    x = 46,766,362,308.52/245,481.24
  6. Step 6: Final answer
    x = 190,508.91

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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.