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Finding the Fourth Proportional to 239,011, 329,850.93 and 138,409

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Solution

The fourth proportional to 239,011, 329,850.93 and 138,409 is: 191,013.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,011 : 329,850.93 = 138,409 : x
  2. Step 2: Convert to fraction form
    239,011/329,850.93 = 138,409/x
  3. Step 3: Cross multiply
    239,011x = 329,850.93 × 138,409
  4. Step 4: Simplify right side
    239,011x = 45,654,337,370.37
  5. Step 5: Solve for x
    x = 45,654,337,370.37/239,011
  6. Step 6: Final answer
    x = 191,013.54

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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.