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Finding the Fourth Proportional to 238,408.38, 329,005.80 and 130,980.65

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Solution

The fourth proportional to 238,408.38, 329,005.80 and 130,980.65 is: 180,754.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,408.38 : 329,005.80 = 130,980.65 : x
  2. Step 2: Convert to fraction form
    238,408.38/329,005.80 = 130,980.65/x
  3. Step 3: Cross multiply
    238,408.38x = 329,005.80 × 130,980.65
  4. Step 4: Simplify right side
    238,408.38x = 43,093,391,892.74
  5. Step 5: Solve for x
    x = 43,093,391,892.74/238,408.38
  6. Step 6: Final answer
    x = 180,754.52

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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.