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Finding the Third Proportional to 138,289.36 and 213,575.51

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Solution

The third proportional to 138,289.36 and 213,575.51 is: 329,848.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,289.36 : 213,575.51 = 213,575.51 : x
  2. Step 2: Convert to fraction form
    138,289.36/213,575.51 = 213,575.51/x
  3. Step 3: Cross multiply
    138,289.36x = 213,575.51 × 213,575.51
  4. Step 4: Simplify right side
    138,289.36x = 45,614,497,537.37
  5. Step 5: Solve for x
    x = 45,614,497,537.37/138,289.36
  6. Step 6: Final answer
    x = 329,848.21

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.