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Finding the Fourth Proportional to 639,959.27, 959,994.03 and 166,645.49

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Solution

The fourth proportional to 639,959.27, 959,994.03 and 166,645.49 is: 249,982.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,959.27 : 959,994.03 = 166,645.49 : x
  2. Step 2: Convert to fraction form
    639,959.27/959,994.03 = 166,645.49/x
  3. Step 3: Cross multiply
    639,959.27x = 959,994.03 × 166,645.49
  4. Step 4: Simplify right side
    639,959.27x = 159,978,675,526.43
  5. Step 5: Solve for x
    x = 159,978,675,526.43/639,959.27
  6. Step 6: Final answer
    x = 249,982.59

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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.