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Finding the Fourth Proportional to 238,894.47, 329,676.84 and 136,917.72

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Solution

The fourth proportional to 238,894.47, 329,676.84 and 136,917.72 is: 188,947.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,894.47 : 329,676.84 = 136,917.72 : x
  2. Step 2: Convert to fraction form
    238,894.47/329,676.84 = 136,917.72/x
  3. Step 3: Cross multiply
    238,894.47x = 329,676.84 × 136,917.72
  4. Step 4: Simplify right side
    238,894.47x = 45,138,601,269.60
  5. Step 5: Solve for x
    x = 45,138,601,269.60/238,894.47
  6. Step 6: Final answer
    x = 188,947.87

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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.