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Finding the Fourth Proportional to 391,742.60, 587,627.73 and 125,468.46

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Solution

The fourth proportional to 391,742.60, 587,627.73 and 125,468.46 is: 188,207.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,742.60 : 587,627.73 = 125,468.46 : x
  2. Step 2: Convert to fraction form
    391,742.60/587,627.73 = 125,468.46/x
  3. Step 3: Cross multiply
    391,742.60x = 587,627.73 × 125,468.46
  4. Step 4: Simplify right side
    391,742.60x = 73,728,746,336.40
  5. Step 5: Solve for x
    x = 73,728,746,336.40/391,742.60
  6. Step 6: Final answer
    x = 188,207.12

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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.