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Finding the Fourth Proportional to 238,419.64, 329,021.33 and 130,991.90

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Solution

The fourth proportional to 238,419.64, 329,021.33 and 130,991.90 is: 180,770.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,419.64 : 329,021.33 = 130,991.90 : x
  2. Step 2: Convert to fraction form
    238,419.64/329,021.33 = 130,991.90/x
  3. Step 3: Cross multiply
    238,419.64x = 329,021.33 × 130,991.90
  4. Step 4: Simplify right side
    238,419.64x = 43,099,129,157.23
  5. Step 5: Solve for x
    x = 43,099,129,157.23/238,419.64
  6. Step 6: Final answer
    x = 180,770.05

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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.