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Finding the Fourth Proportional to 608,193.28, 839,439.92 and 353,691.28

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Solution

The fourth proportional to 608,193.28, 839,439.92 and 353,691.28 is: 488,171.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,193.28 : 839,439.92 = 353,691.28 : x
  2. Step 2: Convert to fraction form
    608,193.28/839,439.92 = 353,691.28/x
  3. Step 3: Cross multiply
    608,193.28x = 839,439.92 × 353,691.28
  4. Step 4: Simplify right side
    608,193.28x = 296,902,579,787.90
  5. Step 5: Solve for x
    x = 296,902,579,787.90/608,193.28
  6. Step 6: Final answer
    x = 488,171.42

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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.