Home / 268,778.68-403,226.33-81,785.32

Finding the Fourth Proportional to 268,778.68, 403,226.33 and 81,785.32

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Solution

The fourth proportional to 268,778.68, 403,226.33 and 81,785.32 is: 122,695.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,778.68 : 403,226.33 = 81,785.32 : x
  2. Step 2: Convert to fraction form
    268,778.68/403,226.33 = 81,785.32/x
  3. Step 3: Cross multiply
    268,778.68x = 403,226.33 × 81,785.32
  4. Step 4: Simplify right side
    268,778.68x = 32,977,994,431.48
  5. Step 5: Solve for x
    x = 32,977,994,431.48/268,778.68
  6. Step 6: Final answer
    x = 122,695.72

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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.