Home / 238,985.12-329,911.44-138,363.68

Finding the Fourth Proportional to 238,985.12, 329,911.44 and 138,363.68

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Solution

The fourth proportional to 238,985.12, 329,911.44 and 138,363.68 is: 191,006.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,985.12 : 329,911.44 = 138,363.68 : x
  2. Step 2: Convert to fraction form
    238,985.12/329,911.44 = 138,363.68/x
  3. Step 3: Cross multiply
    238,985.12x = 329,911.44 × 138,363.68
  4. Step 4: Simplify right side
    238,985.12x = 45,647,760,912.50
  5. Step 5: Solve for x
    x = 45,647,760,912.50/238,985.12
  6. Step 6: Final answer
    x = 191,006.71

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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.