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Finding the Fourth Proportional to 238,708.25, 329,410.80 and 131,278.28

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Solution

The fourth proportional to 238,708.25, 329,410.80 and 131,278.28 is: 181,160.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,708.25 : 329,410.80 = 131,278.28 : x
  2. Step 2: Convert to fraction form
    238,708.25/329,410.80 = 131,278.28/x
  3. Step 3: Cross multiply
    238,708.25x = 329,410.80 × 131,278.28
  4. Step 4: Simplify right side
    238,708.25x = 43,244,481,590.37
  5. Step 5: Solve for x
    x = 43,244,481,590.37/238,708.25
  6. Step 6: Final answer
    x = 181,160.40

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1.5x scale

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.