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Finding the Fourth Proportional to 639,271.56, 958,658.04 and 239,694.60

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Solution

The fourth proportional to 639,271.56, 958,658.04 and 239,694.60 is: 359,448.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,271.56 : 958,658.04 = 239,694.60 : x
  2. Step 2: Convert to fraction form
    639,271.56/958,658.04 = 239,694.60/x
  3. Step 3: Cross multiply
    639,271.56x = 958,658.04 × 239,694.60
  4. Step 4: Simplify right side
    639,271.56x = 229,785,155,434.58
  5. Step 5: Solve for x
    x = 229,785,155,434.58/639,271.56
  6. Step 6: Final answer
    x = 359,448.43

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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.