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Finding the Fourth Proportional to 238,809.87, 329,559.76 and 129,916.58

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Solution

The fourth proportional to 238,809.87, 329,559.76 and 129,916.58 is: 179,286.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,809.87 : 329,559.76 = 129,916.58 : x
  2. Step 2: Convert to fraction form
    238,809.87/329,559.76 = 129,916.58/x
  3. Step 3: Cross multiply
    238,809.87x = 329,559.76 × 129,916.58
  4. Step 4: Simplify right side
    238,809.87x = 42,815,276,924.82
  5. Step 5: Solve for x
    x = 42,815,276,924.82/238,809.87
  6. Step 6: Final answer
    x = 179,286.04

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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.