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Finding the Fourth Proportional to 238,372.56, 328,961.52 and 130,940.64

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Solution

The fourth proportional to 238,372.56, 328,961.52 and 130,940.64 is: 180,702.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,372.56 : 328,961.52 = 130,940.64 : x
  2. Step 2: Convert to fraction form
    238,372.56/328,961.52 = 130,940.64/x
  3. Step 3: Cross multiply
    238,372.56x = 328,961.52 × 130,940.64
  4. Step 4: Simplify right side
    238,372.56x = 43,074,431,964.17
  5. Step 5: Solve for x
    x = 43,074,431,964.17/238,372.56
  6. Step 6: Final answer
    x = 180,702.14

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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.