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Finding the Fourth Proportional to 639,272.56, 958,659.54 and 239,695.60

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Solution

The fourth proportional to 639,272.56, 958,659.54 and 239,695.60 is: 359,449.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,272.56 : 958,659.54 = 239,695.60 : x
  2. Step 2: Convert to fraction form
    639,272.56/958,659.54 = 239,695.60/x
  3. Step 3: Cross multiply
    639,272.56x = 958,659.54 × 239,695.60
  4. Step 4: Simplify right side
    639,272.56x = 229,786,473,636.02
  5. Step 5: Solve for x
    x = 229,786,473,636.02/639,272.56
  6. Step 6: Final answer
    x = 359,449.92

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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.