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Finding the Fourth Proportional to 639,752.88, 959,630.46 and 166,437.48

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Solution

The fourth proportional to 639,752.88, 959,630.46 and 166,437.48 is: 249,656.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,752.88 : 959,630.46 = 166,437.48 : x
  2. Step 2: Convert to fraction form
    639,752.88/959,630.46 = 166,437.48/x
  3. Step 3: Cross multiply
    639,752.88x = 959,630.46 × 166,437.48
  4. Step 4: Simplify right side
    639,752.88x = 159,718,475,493.64
  5. Step 5: Solve for x
    x = 159,718,475,493.64/639,752.88
  6. Step 6: Final answer
    x = 249,656.52

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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.