Home / 268,815.12-403,289.10-111,088.68

Finding the Fourth Proportional to 268,815.12, 403,289.10 and 111,088.68

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Solution

The fourth proportional to 268,815.12, 403,289.10 and 111,088.68 is: 166,660.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,815.12 : 403,289.10 = 111,088.68 : x
  2. Step 2: Convert to fraction form
    268,815.12/403,289.10 = 111,088.68/x
  3. Step 3: Cross multiply
    268,815.12x = 403,289.10 × 111,088.68
  4. Step 4: Simplify right side
    268,815.12x = 44,800,853,777.39
  5. Step 5: Solve for x
    x = 44,800,853,777.39/268,815.12
  6. Step 6: Final answer
    x = 166,660.47

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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.