Home / 268,853.12-403,279.68-81,864.64

Finding the Fourth Proportional to 268,853.12, 403,279.68 and 81,864.64

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Solution

The fourth proportional to 268,853.12, 403,279.68 and 81,864.64 is: 122,796.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,853.12 : 403,279.68 = 81,864.64 : x
  2. Step 2: Convert to fraction form
    268,853.12/403,279.68 = 81,864.64/x
  3. Step 3: Cross multiply
    268,853.12x = 403,279.68 × 81,864.64
  4. Step 4: Simplify right side
    268,853.12x = 33,014,345,822.52
  5. Step 5: Solve for x
    x = 33,014,345,822.52/268,853.12
  6. Step 6: Final answer
    x = 122,796.96

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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.