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Finding the Fourth Proportional to 391,260.81, 586,891.22 and 110,780.49

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Solution

The fourth proportional to 391,260.81, 586,891.22 and 110,780.49 is: 166,170.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,260.81 : 586,891.22 = 110,780.49 : x
  2. Step 2: Convert to fraction form
    391,260.81/586,891.22 = 110,780.49/x
  3. Step 3: Cross multiply
    391,260.81x = 586,891.22 × 110,780.49
  4. Step 4: Simplify right side
    391,260.81x = 65,016,096,374.40
  5. Step 5: Solve for x
    x = 65,016,096,374.40/391,260.81
  6. Step 6: Final answer
    x = 166,170.74

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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.