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Finding the Fourth Proportional to 391,751.02, 587,568.21 and 125,483.77

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Solution

The fourth proportional to 391,751.02, 587,568.21 and 125,483.77 is: 188,206.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,751.02 : 587,568.21 = 125,483.77 : x
  2. Step 2: Convert to fraction form
    391,751.02/587,568.21 = 125,483.77/x
  3. Step 3: Cross multiply
    391,751.02x = 587,568.21 × 125,483.77
  4. Step 4: Simplify right side
    391,751.02x = 73,730,274,122.95
  5. Step 5: Solve for x
    x = 73,730,274,122.95/391,751.02
  6. Step 6: Final answer
    x = 188,206.97

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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.