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Finding the Fourth Proportional to 268,959.96, 403,498.26 and 81,986.04

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Solution

The fourth proportional to 268,959.96, 403,498.26 and 81,986.04 is: 122,996.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,959.96 : 403,498.26 = 81,986.04 : x
  2. Step 2: Convert to fraction form
    268,959.96/403,498.26 = 81,986.04/x
  3. Step 3: Cross multiply
    268,959.96x = 403,498.26 × 81,986.04
  4. Step 4: Simplify right side
    268,959.96x = 33,081,224,484.29
  5. Step 5: Solve for x
    x = 33,081,224,484.29/268,959.96
  6. Step 6: Final answer
    x = 122,996.84

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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.