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Finding the Fourth Proportional to 639,732.84, 959,600.47 and 166,417.44

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Solution

The fourth proportional to 639,732.84, 959,600.47 and 166,417.44 is: 249,626.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,732.84 : 959,600.47 = 166,417.44 : x
  2. Step 2: Convert to fraction form
    639,732.84/959,600.47 = 166,417.44/x
  3. Step 3: Cross multiply
    639,732.84x = 959,600.47 × 166,417.44
  4. Step 4: Simplify right side
    639,732.84x = 159,694,253,640.20
  5. Step 5: Solve for x
    x = 159,694,253,640.20/639,732.84
  6. Step 6: Final answer
    x = 249,626.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.