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Finding the Fourth Proportional to 391,258.12, 586,910.23 and 110,751.88

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Solution

The fourth proportional to 391,258.12, 586,910.23 and 110,751.88 is: 166,134.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,258.12 : 586,910.23 = 110,751.88 : x
  2. Step 2: Convert to fraction form
    391,258.12/586,910.23 = 110,751.88/x
  3. Step 3: Cross multiply
    391,258.12x = 586,910.23 × 110,751.88
  4. Step 4: Simplify right side
    391,258.12x = 65,001,408,152.30
  5. Step 5: Solve for x
    x = 65,001,408,152.30/391,258.12
  6. Step 6: Final answer
    x = 166,134.34

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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.