Home / 268,805.76-403,267.04-81,812.40

Finding the Fourth Proportional to 268,805.76, 403,267.04 and 81,812.40

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Solution

The fourth proportional to 268,805.76, 403,267.04 and 81,812.40 is: 122,736.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,805.76 : 403,267.04 = 81,812.40 : x
  2. Step 2: Convert to fraction form
    268,805.76/403,267.04 = 81,812.40/x
  3. Step 3: Cross multiply
    268,805.76x = 403,267.04 × 81,812.40
  4. Step 4: Simplify right side
    268,805.76x = 32,992,244,383.30
  5. Step 5: Solve for x
    x = 32,992,244,383.30/268,805.76
  6. Step 6: Final answer
    x = 122,736.37

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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.