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Finding the Fourth Proportional to 238,694.72, 329,305.49 and 136,665.65

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Solution

The fourth proportional to 238,694.72, 329,305.49 and 136,665.65 is: 188,545.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,694.72 : 329,305.49 = 136,665.65 : x
  2. Step 2: Convert to fraction form
    238,694.72/329,305.49 = 136,665.65/x
  3. Step 3: Cross multiply
    238,694.72x = 329,305.49 × 136,665.65
  4. Step 4: Simplify right side
    238,694.72x = 45,004,748,979.35
  5. Step 5: Solve for x
    x = 45,004,748,979.35/238,694.72
  6. Step 6: Final answer
    x = 188,545.22

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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.