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Finding the Fourth Proportional to 639,754.88, 959,633.46 and 166,439.48

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Solution

The fourth proportional to 639,754.88, 959,633.46 and 166,439.48 is: 249,659.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,754.88 : 959,633.46 = 166,439.48 : x
  2. Step 2: Convert to fraction form
    639,754.88/959,633.46 = 166,439.48/x
  3. Step 3: Cross multiply
    639,754.88x = 959,633.46 × 166,439.48
  4. Step 4: Simplify right side
    639,754.88x = 159,720,894,073.00
  5. Step 5: Solve for x
    x = 159,720,894,073.00/639,754.88
  6. Step 6: Final answer
    x = 249,659.52

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Similar ratio
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1.5x scale

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.