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Finding the Fourth Proportional to 283,900.73, 391,806.55 and 163,065.33

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Solution

The fourth proportional to 283,900.73, 391,806.55 and 163,065.33 is: 225,043.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,900.73 : 391,806.55 = 163,065.33 : x
  2. Step 2: Convert to fraction form
    283,900.73/391,806.55 = 163,065.33/x
  3. Step 3: Cross multiply
    283,900.73x = 391,806.55 × 163,065.33
  4. Step 4: Simplify right side
    283,900.73x = 63,890,063,964.25
  5. Step 5: Solve for x
    x = 63,890,063,964.25/283,900.73
  6. Step 6: Final answer
    x = 225,043.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.