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Finding the Fourth Proportional to 238,881.03, 329,651.65 and 129,981.69

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Solution

The fourth proportional to 238,881.03, 329,651.65 and 129,981.69 is: 179,372.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,881.03 : 329,651.65 = 129,981.69 : x
  2. Step 2: Convert to fraction form
    238,881.03/329,651.65 = 129,981.69/x
  3. Step 3: Cross multiply
    238,881.03x = 329,651.65 × 129,981.69
  4. Step 4: Simplify right side
    238,881.03x = 42,848,677,928.38
  5. Step 5: Solve for x
    x = 42,848,677,928.38/238,881.03
  6. Step 6: Final answer
    x = 179,372.46

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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.